WO2021091967A1 - Ras inhibitors - Google Patents
Ras inhibitors Download PDFInfo
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- WO2021091967A1 WO2021091967A1 PCT/US2020/058817 US2020058817W WO2021091967A1 WO 2021091967 A1 WO2021091967 A1 WO 2021091967A1 US 2020058817 W US2020058817 W US 2020058817W WO 2021091967 A1 WO2021091967 A1 WO 2021091967A1
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- optionally substituted
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains three hetero rings
- C07D498/18—Bridged systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/50—Pyridazines; Hydrogenated pyridazines
- A61K31/504—Pyridazines; Hydrogenated pyridazines forming part of bridged ring systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/55—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/10—Spiro-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
- C07D513/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains three hetero rings
- C07D513/14—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
- C07D513/22—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains four or more hetero rings
Definitions
- Ras proteins (K-Ras, H-Ras and N-Ras) play an essential role in various human cancers and are therefore appropriate targets for anticancer therapy. Indeed, mutations in Ras proteins account for approximately 30% of all human cancers in the United States, many of which are fatal. Dysregulation of Ras proteins by activating mutations, overexpression or upstream activation is common in human tumors, and activating mutations in Ras are frequently found in human cancer.
- Ras proteins function by inhibiting both GTPase-activating protein (GAP)-dependent and intrinsic hydrolysis rates of GTP, significantly skewing the population of Ras mutant proteins to the “on” (GTP-bound) state (Ras(ON)), leading to oncogenic MAPK signaling.
- GAP GTPase-activating protein
- Ras exhibits a picomolar affinity for GTP, enabling Ras to be activated even in the presence of low concentrations of this nucleotide.
- Mutations at codons 13 (e.g., G13D) and 61 (e.g., Q61K) of Ras are also responsible for oncogenic activity in some cancers.
- Ras inhibitors The approach described herein entails formation of a high affinity three-component complex, or conjugate, between a synthetic ligand and two intracellular proteins which do not interact under normal physiological conditions: the target protein of interest (e.g., Ras), and a widely expressed cytosolic chaperone (presenter protein) in the cell (e.g., cyclophilin A). More specifically, in some embodiments, the inhibitors of Ras described herein induce a new binding pocket in Ras by driving formation of a high affinity tri-complex, or conjugate, between the Ras protein and the widely expressed cytosolic chaperone, cyclophilin A (CYPA).
- CYPA cyclophilin A
- the inventors believe that one way the inhibitory effect on Ras is effected by compounds of the invention and the complexes, or conjugates, they form is by steric occlusion of the interaction site between Ras and downstream effector molecules, such as RAF and PI3K, which are required for propagating the oncogenic signal.
- the disclosure features a compound, or pharmaceutically acceptable salt thereof, of structural Formula I: wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH3)C(O)-(CH2)- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 10- membered heteroarylene;
- compositions comprising a compound of Formula I, or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable excipient.
- a conjugate, or salt thereof comprising the structure of Formula IV: M-L-P Formula IV wherein L is a linker; P is a monovalent organic moiety; and M has the structure of Formula V: wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6- membered heteroarylene;
- a method of treating cancer in a subject in need thereof comprising administering to the subject a therapeutically effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof.
- a method is provided of treating a Ras protein-related disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof.
- a method of inhibiting a Ras protein in a cell the method comprising contacting the cell with an effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof. It is specifically contemplated that any limitation discussed with respect to one embodiment of the invention may apply to any other embodiment of the invention.
- FIG.1B Treatment of KRAS G12D tumors in vivo with a compound of the present invention, Compound A, drives tumor regressions in a pancreatic CDX model (HPAC CDX model, PDAC, KRAS G12D/WT).
- the term “about” is used to indicate that a value includes the standard deviation of error for the device or method being employed to determine the value.
- the term “about” refers to a range of values that fall within 25%, 20%, 19%, 18%, 17%, 16%, 15%, 14%, 13%, 12%, 11%, 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, or less in either direction (greater than or less than) of a stated value, unless otherwise stated or otherwise evident from the context (e.g., where such number would exceed 100% of a possible value).
- adjacent in the context of describing adjacent atoms refers to bivalent atoms that are directly connected by a covalent bond.
- wild-type refers to an entity having a structure or activity as found in nature in a “normal” (as contrasted with mutant, diseased, altered, etc) state or context.
- wild-type genes and polypeptides often exist in multiple different forms (e.g., alleles).
- certain compounds described herein can exist in one or more different isomeric (e.g., stereoisomers, geometric isomers, atropisomers, tautomers) or isotopic (e.g., in which one or more atoms has been substituted with a different isotope of the atom, such as hydrogen substituted for deuterium) forms.
- isomeric e.g., stereoisomers, geometric isomers, atropisomers, tautomers
- isotopic e.g., in which one or more atoms has been substituted with a different isotope of the atom, such as hydrogen substituted for deuterium
- Compounds described herein can be asymmetric (e.g., having one or more stereocenters). All stereoisomers, such as enantiomers and diastereomers, are intended unless otherwise indicated.
- Cis and trans geometric isomers of the compounds of the present disclosure are described and may be isolated as a mixture of isomers or as separated isomeric forms.
- one or more compounds depicted herein may exist in different tautomeric forms.
- references to such compounds encompass all such tautomeric forms.
- tautomeric forms result from the swapping of a single bond with an adjacent double bond and the concomitant migration of a proton.
- a tautomeric form may be a prototropic tautomer, which is an isomeric protonation states having the same empirical formula and total charge as a reference form.
- moieties with prototropic tautomeric forms are ketone - enol pairs, amide - imidic acid pairs, lactam - lactim pairs, amide - imidic acid pairs, enamine - imine pairs, and annular forms where a proton can occupy two or more positions of a heterocyclic system, such as, 1H- and 3H-imidazole, 1H-, 2H- and 4H-1,2,4-triazole, 1H- and 2H- isoindole, and 1H- and 2H-pyrazole.
- tautomeric forms can be in equilibrium or sterically locked into one form by appropriate substitution.
- tautomeric forms result from acetal interconversion.
- structures depicted herein are also meant to include compounds that differ only in the presence of one or more isotopically enriched atoms.
- Exemplary isotopes that can be incorporated into compounds of the present invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, fluorine, chlorine, and iodine, such as 2 H, 3 H, 11 C, 13 C, 14 C, 13 N, 15 N, 15 O, 17 O, 18 O, 32 P, 33 P, 35 S, 18 F, 36 Cl, 123 I and 125 I.
- Isotopically-labeled compounds e.g., those labeled with 3 H and 14 C
- Tritiated (i.e., 3 H) and carbon-14 (i.e., 14 C) isotopes can be useful for their ease of preparation and detectability. Further, substitution with heavier isotopes such as deuterium (i.e., 2 H) may afford certain therapeutic advantages resulting from greater metabolic stability (e.g., increased in vivo half-life or reduced dosage requirements).
- one or more hydrogen atoms are replaced by 2 H or 3 H, or one or more carbon atoms are replaced by 13 C- or 14 C-enriched carbon.
- Positron emitting isotopes such as 15 O, 13 N, 11 C, and 18 F are useful for positron emission tomography (PET) studies to examine substrate receptor occupancy.
- isotopically labeled compounds can generally be prepared by following procedures analogous to those disclosed for compounds of the present invention described herein, by substituting an isotopically labeled reagent for a non-isotopically labeled reagent.
- many chemical entities can adopt a variety of different solid forms such as, for example, amorphous forms or crystalline forms (e.g., polymorphs, hydrates, solvate).
- compounds of the present invention may be utilized in any such form, including in any solid form.
- compounds described or depicted herein may be provided or utilized in hydrate or solvate form.
- substituents of compounds of the present disclosure are disclosed in groups or in ranges. It is specifically intended that the present disclosure include each and every individual subcombination of the members of such groups and ranges.
- C 1 -C 6 alkyl is specifically intended to individually disclose methyl, ethyl, C3 alkyl, C4 alkyl, C5 alkyl, and C6 alkyl.
- the present disclosure is intended to cover individual compounds and groups of compounds (e.g., genera and subgenera) containing each and every individual subcombination of members at each position.
- optionally substituted X is intended to be equivalent to “X, wherein X is optionally substituted” (e.g., “alkyl, wherein said alkyl is optionally substituted”). It is not intended to mean that the feature “X” (e.g., alkyl) per se is optional.
- certain compounds of interest may contain one or more “optionally substituted” moieties.
- substituted whether preceded by the term “optionally” or not, means that one or more hydrogens of the designated moiety are replaced with a suitable substituent, e.g., any of the substituents or groups described herein.
- an “optionally substituted” group may have a suitable substituent at each substitutable position of the group, and when more than one position in any given structure may be substituted with more than one substituent selected from a specified group, the substituent may be either the same or different at every position.
- substituents envisioned by the present disclosure are preferably those that result in the formation of stable or chemically feasible compounds.
- Suitable monovalent substituents on R ⁇ may be, independently, halogen, -(CH 2 )0-2R ⁇ , -(haloR ⁇ ), -(CH 2 )0-2OH, -(CH 2 )0-2OR ⁇ , -(CH 2 )0-2CH(OR ⁇ ) 2 ; -O(haloR ⁇ ), -CN, -N3, -(CH 2 )0-2C(O)R ⁇ , -(CH 2 )0- 2C(O)OH, -(CH 2 )0-2C(O)OR ⁇ , -(CH 2 )0-2SR ⁇ , -(CH 2 )0-2SH, -(CH 2 )0-2NH2, -(CH 2 )0-2NHR ⁇ , -(CH 2 )0-2NR ⁇ 2, -N O2, -
- Suitable divalent substituents that are bound to vicinal substitutable carbons of an “optionally substituted” group include: -O(CR * 2) 2 -3O-, wherein each independent occurrence of R * is selected from hydrogen, C 1 -C 6 aliphatic which may be substituted as defined below, or an unsubstituted 5 to 6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
- Suitable substituents on the aliphatic group of R * include halogen, -R ⁇ , -(haloR ⁇ ), -OH, -OR ⁇ , -O(haloR ⁇ ), -CN, -C(O)OH, -C(O)OR ⁇ , -NH2, -NHR ⁇ , -NR ⁇ 2, or -NO2, wherein each R ⁇ is unsubstituted or where preceded by “halo” is substituted only with one or more halogens, and is independently C 1 -C 4 aliphatic, -CH 2 Ph, -O(CH 2 )0-1Ph, or a 5 to 6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
- Suitable substituents on a substitutable nitrogen of an “optionally substituted” group include -R ⁇ , -NR ⁇ 2, -C(O)R ⁇ , -C(O)OR ⁇ , -C(O)C(O)R ⁇ , -C(O)CH 2 C(O)R ⁇ , -S(O) 2 R ⁇ , -S(O) 2 NR ⁇ 2, -C(S)NR ⁇ 2, -C(NH)NR ⁇ 2, or -N(R ⁇ )S(O) 2 R ⁇ ; wherein each R ⁇ is independently hydrogen, C 1 -C 6 aliphatic which may be substituted as defined below, unsubstituted -OPh, or an unsubstituted 3 to 6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur, or, notwithstanding the definition above, two independent occurrences of R ⁇
- Suitable substituents on an aliphatic group of R ⁇ are independently halogen, -R ⁇ , -(haloR ⁇ ), -OH, -OR ⁇ , -O(haloR ⁇ ), -CN, -C(O)OH, -C(O)OR ⁇ , -NH2, -NHR ⁇ , -NR ⁇ 2, or -NO2, wherein each R ⁇ is unsubstituted or where preceded by “halo” is substituted only with one or more halogens, and is independently C 1 -C 4 aliphatic, -CH 2 Ph, -O(CH 2 )0-1Ph, or a 5 to 6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
- acetyl refers to the group -C(O)CH 3 .
- alkoxy refers to a -O-C 1 -C 2 0 alkyl group, wherein the alkoxy group is attached to the remainder of the compound through an oxygen atom.
- alkyl refers to a saturated, straight or branched monovalent hydrocarbon group containing from 1 to 20 (e.g., from 1 to 10 or from 1 to 6) carbons.
- an alkyl group is unbranched (i.e., is linear); in some embodiments, an alkyl group is branched.
- Alkyl groups are exemplified by, but not limited to, methyl, ethyl, n- and iso-propyl, n-, sec-, iso- and tert-butyl, and neopentyl.
- alkylene represents a saturated divalent hydrocarbon group derived from a straight or branched chain saturated hydrocarbon by the removal of two hydrogen atoms, and is exemplified by methylene, ethylene, isopropylene, and the like.
- Cx-Cy alkylene represents alkylene groups having between x and y carbons.
- Exemplary values for x are 1, 2, 3, 4, 5, and 6, and exemplary values for y are 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, or 20 (e.g., C 1 -C 6 , C1-C10, C2-C20, C 2 -C 6 , C2-C10, or C2-C20 alkylene).
- the alkylene can be further substituted with 1, 2, 3, or 4 substituent groups as defined herein.
- alkenyl represents monovalent straight or branched chain groups of, unless otherwise specified, from 2 to 20 carbons (e.g., from 2 to 6 or from 2 to 10 carbons) containing one or more carbon-carbon double bonds and is exemplified by ethenyl, 1-propenyl, 2-propenyl, 2-methyl-1-propenyl, 1-butenyl, and 2-butenyl.
- Alkenyls include both cis and trans isomers.
- alkenylene represents a divalent straight or branched chain groups of, unless otherwise specified, from 2 to 20 carbons (e.g., from 2 to 6 or from 2 to 10 carbons) containing one or more carbon-carbon double bonds.
- alkynyl represents monovalent straight or branched chain groups from 2 to 20 carbon atoms (e.g., from 2 to 4, from 2 to 6, or from 2 to 10 carbons) containing a carbon-carbon triple bond and is exemplified by ethynyl, and 1-propynyl.
- alkynyl sulfone represents a group comprising the structure , wherein R is any chemically feasible substituent described herein.
- amino represents -N(R ⁇ ) 2 , e.g., -NH2 and -N(CH 3 ) 2 .
- aminoalkyl represents an alkyl moiety substituted on one or more carbon atoms with one or more amino moieties.
- amino acid refers to a molecule having a side chain, an amino group, and an acid group (e.g., -CO 2 H or -SO3H), wherein the amino acid is attached to the parent molecular group by the side chain, amino group, or acid group (e.g., the side chain).
- amino acid in its broadest sense, refers to any compound or substance that can be incorporated into a polypeptide chain, e.g., through formation of one or more peptide bonds.
- an amino acid has the general structure H2N-C(H)(R)-COOH.
- an amino acid is a naturally-occurring amino acid.
- an amino acid is a synthetic amino acid; in some embodiments, an amino acid is a D-amino acid; in some embodiments, an amino acid is an L-amino acid.
- Standard amino acid refers to any of the twenty standard L-amino acids commonly found in naturally occurring peptides.
- Exemplary amino acids include alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, optionally substituted hydroxylnorvaline, isoleucine, leucine, lysine, methionine, norvaline, ornithine, phenylalanine, proline, pyrrolysine, selenocysteine, serine, taurine, threonine, tryptophan, tyrosine, and valine.
- aryl represents a monovalent monocyclic, bicyclic, or multicyclic ring system formed by carbon atoms, wherein the ring attached to the pendant group is aromatic.
- aryl groups are phenyl, naphthyl, phenanthrenyl, and anthracenyl.
- An aryl ring can be attached to its pendant group at any heteroatom or carbon ring atom that results in a stable structure and any of the ring atoms can be optionally substituted unless otherwise specified.
- the term “C0,” as used herein, represents a bond.
- part of the term -N(C(O)-(C0-C5 alkylene-H)- includes -N(C(O)-(C0 alkylene-H)-, which is also represented by -N(C(O)-H)-.
- Carbocyclic and “carbocyclyl,” as used herein, refer to a monovalent, optionally substituted 3 to 12-membered monocyclic, bicyclic, or tricyclic ring structure, which may be bridged, fused or spirocyclic, in which all the rings are formed by carbon atoms and at least one ring is non-aromatic.
- Carbocyclic structures include cycloalkyl, cycloalkenyl, and cycloalkynyl groups.
- carbocyclyl groups are cyclohexyl, cyclohexenyl, cyclooctynyl, 1,2-dihydronaphthyl, 1,2,3,4-tetrahydronaphthyl, fluorenyl, indenyl, indanyl, decalinyl, and the like.
- a carbocyclic ring can be attached to its pendant group at any ring atom that results in a stable structure and any of the ring atoms can be optionally substituted unless otherwise specified.
- cyano represents a -CN group.
- cycloalkyl represents a monovalent saturated cyclic hydrocarbon group, which may be bridged, fused, or spirocyclic having from three to eight ring carbons, unless otherwise specified, and is exemplified by cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cycloheptyl.
- cycloalkenyl represents a monovalent, non-aromatic, saturated cyclic hydrocarbon group, which may be bridged, fused, or spirocyclic having from three to eight ring carbons, unless otherwise specified, and containing one or more carbon-carbon double bonds.
- diastereomer means stereoisomers that are not mirror images of one another and are non-superimposable on one another.
- enantiomer means each individual optically active form of a compound of the invention, having an optical purity or enantiomeric excess (as determined by methods standard in the art) of at least 80% (i.e., at least 90% of one enantiomer and at most 10% of the other enantiomer), preferably at least 90% and more preferably at least 98%.
- guanidinyl refers to a group having the structure: , wherein each R is, independently, any any chemically feasible substituent described herein.
- guanidinoalkyl alkyl represents an alkyl moiety substituted on one or more carbon atoms with one or more guanidinyl moieties.
- haloacetyl refers to an acetyl group wherein at least one of the hydrogens has been replaced by a halogen.
- haloalkyl represents an alkyl moiety substituted on one or more carbon atoms with one or more of the same of different halogen moieties.
- halogen represents a halogen selected from bromine, chlorine, iodine, or fluorine.
- heteroalkyl refers to an "alkyl” group, as defined herein, in which at least one carbon atom has been replaced with a heteroatom (e.g., an O, N, or S atom).
- heteroaryl represents a monovalent, monocyclic or polycyclic ring structure that contains at least one fully aromatic ring: i.e., they contain 4n+2 pi electrons within the monocyclic or polycyclic ring system and contains at least one ring heteroatom selected from N, O, or S in that aromatic ring.
- exemplary unsubstituted heteroaryl groups are of 1 to 12 (e.g., 1 to 11, 1 to 10, 1 to 9, 2 to 12, 2 to 11, 2 to 10, or 2 to 9) carbons.
- heteroaryl includes bicyclic, tricyclic, and tetracyclic groups in which any of the above heteroaromatic rings is fused to one or more, aryl or carbocyclic rings, e.g., a phenyl ring, or a cyclohexane ring.
- heteroaryl groups include, but are not limited to, pyridyl, pyrazolyl, benzooxazolyl, benzoimidazolyl, benzothiazolyl, imidazolyl, thiazolyl, quinolinyl, tetrahydroquinolinyl, and 4-azaindolyl.
- heteroaryl ring can be attached to its pendant group at any ring atom that results in a stable structure and any of the ring atoms can be optionally substituted unless otherwise specified.
- the heteroaryl is substituted with 1, 2, 3, or 4 substituents groups.
- the term “heterocycloalkyl,” as used herein, represents a monovalent, monocyclic, bicyclic or polycyclic ring system, which may be bridged, fused, or spirocyclic, wherein at least one ring is non- aromatic and wherein the non-aromatic ring contains one, two, three, or four heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur.
- heterocycloalkyl also represents a heterocyclic compound having a bridged multicyclic structure in which one or more carbons or heteroatoms bridges two non-adjacent members of a monocyclic ring, e.g., a quinuclidinyl group.
- heterocycloalkyl includes bicyclic, tricyclic, and tetracyclic groups in which any of the above heterocyclic rings is fused to one or more aromatic, carbocyclic, heteroaromatic, or heterocyclic rings, e.g., an aryl ring, a cyclohexane ring, a cyclohexene ring, a cyclopentane ring, a cyclopentene ring, a pyridine ring, or a pyrrolidine ring.
- heterocycloalkyl groups are pyrrolidinyl, piperidinyl, 1,2,3,4-tetrahydroquinolinyl, decahydroquinolinyl, dihydropyrrolopyridine, and decahydronapthyridinyl.
- a heterocycloalkyl ring can be attached to its pendant group at any ring atom that results in a stable structure and any of the ring atoms can be optionally substituted unless otherwise specified.
- the term “hydroxy,” as used herein, represents a -OH group.
- hydroxyalkyl represents an alkyl moiety substituted on one or more carbon atoms with one or more -OH moieties.
- isomer means any tautomer, stereoisomer, atropiosmer, enantiomer, or diastereomer of any compound of the invention. It is recognized that the compounds of the invention can have one or more chiral centers or double bonds and, therefore, exist as stereoisomers, such as double-bond isomers (i.e., geometric E/Z isomers) or diastereomers (e.g., enantiomers (i.e., (+) or (-)) or cis/trans isomers).
- stereoisomers such as double-bond isomers (i.e., geometric E/Z isomers) or diastereomers (e.g., enantiomers (i.e., (+) or (-)) or cis/trans isomers).
- the chemical structures depicted herein, and therefore the compounds of the invention encompass all the corresponding stereoisomers, that is, both the stereomerically pure form (e.g., geometrically pure, enantiomerically pure, or diastereomerically pure) and enantiomeric and stereoisomeric mixtures, e.g., racemates.
- Enantiomeric and stereoisomeric mixtures of compounds of the invention can typically be resolved into their component enantiomers or stereoisomers by well-known methods, such as chiral-phase gas chromatography, chiral-phase high performance liquid chromatography, crystallizing the compound as a chiral salt complex, or crystallizing the compound in a chiral solvent.
- Enantiomers and stereoisomers can also be obtained from stereomerically or enantiomerically pure intermediates, reagents, and catalysts by well-known asymmetric synthetic methods.
- linker refers to a divalent organic moiety connecting moiety B to moiety W in a compound of Formula I, such that the resulting compound is capable of achieving an IC50 of 2 uM or less in the Ras-RAF disruption assay protocol provided in the Examples below, and provided here:
- the purpose of this biochemical assay is to measure the ability of test compounds to facilitate ternary complex formation between a nucleotide-loaded Ras isoform and cyclophilin A; the resulting ternary complex disrupts binding to a BRAF RBD construct, inhibiting Ras signaling through a RAF effector.
- assay buffer containing 25 mM HEPES pH 7.3, 0.002% Tween20, 0.1% BSA, 100 mM NaCl and 5 mM MgCl2, tagless Cyclophilin A, His6-K-Ras-GMPPNP (or other Ras variant), and GST-BRAF RBD are combined in a 384-well assay plate at final concentrations of 25 ⁇ M, 12.5 nM and 50 nM, respectively.
- Compound is present in plate wells as a 10-point 3-fold dilution series starting at a final concentration of 30 ⁇ M.
- the linker comprises 20 or fewer linear atoms. In some embodiments, the linker comprises 15 or fewer linear atoms.
- the linker comprises 10 or fewer linear atoms. In some embodiments, the linker has a molecular weight of under 500 g/mol. In some embodiments, the linker has a molecular weight of under 400 g/mol. In some embodiments, the linker has a molecular weight of under 300 g/mol. In some embodiments, the linker has a molecular weight of under 200 g/mol. In some embodiments, the linker has a molecular weight of under 100 g/mol. In some embodiments, the linker has a molecular weight of under 50 g/mol. As used herein, a “monovalent organic moiety” is less than 500 kDa.
- a “monovalent organic moiety” is less than 400 kDa. In some embodiments, a “monovalent organic moiety” is less than 300 kDa. In some embodiments, a “monovalent organic moiety” is less than 200 kDa. In some embodiments, a “monovalent organic moiety” is less than 100 kDa. In some embodiments, a “monovalent organic moiety” is less than 50 kDa. In some embodiments, a “monovalent organic moiety” is less than 25 kDa. In some embodiments, a “monovalent organic moiety” is less than 20 kDa. In some embodiments, a “monovalent organic moiety” is less than 15 kDa.
- a “monovalent organic moiety” is less than 10 kDa. In some embodiments, a “monovalent organic moiety” is less than 1 kDa. In some embodiments, a “monovalent organic moiety” is less than 500 g/mol. In some embodiments, a “monovalent organic moiety” ranges between 500 g/mol and 500 kDa.
- stereoisomer refers to all possible different isomeric as well as conformational forms which a compound may possess (e.g., a compound of any formula described herein), in particular all possible stereochemically and conformationally isomeric forms, all diastereomers, enantiomers or conformers of the basic molecular structure, including atropisomers. Some compounds of the present invention may exist in different tautomeric forms, all of the latter being included within the scope of the present invention.
- sulfonyl represents an -S(O) 2 - group.
- thiocarbonyl refers to a -C(S)- group.
- vinyl ketone refers to a group comprising a carbonyl group directly connected to a carbon-carbon double bond.
- vinyl sulfone refers to a group comprising a sulfonyl group directed connected to a carbon-carbon double bond.
- ynone refers to a group comprising the structure , wherein R is any any chemically feasible substituent described herein.
- references to a particular compound may relate to a specific form of that compound. In some embodiments, reference to a particular compound may relate to that compound in any form.
- a preparation of a single stereoisomer of a compound may be considered to be a different form of the compound than a racemic mixture of the compound; a particular salt of a compound may be considered to be a different form from another salt form of the compound; a preparation containing one conformational isomer ((Z) or (E)) of a double bond may be considered to be a different form from one containing the other conformational isomer ((E) or (Z)) of the double bond; a preparation in which one or more atoms is a different isotope than is present in a reference preparation may be considered to be a different form.
- Ras inhibitors Provided herein are Ras inhibitors.
- the approach described herein entails formation of a high affinity three-component complex, or conjugate, between a synthetic ligand and two intracellular proteins which do not interact under normal physiological conditions: the target protein of interest (e.g., Ras), and a widely expressed cytosolic chaperone (presenter protein) in the cell (e.g., cyclophilin A). More specifically, in some embodiments, the inhibitors of Ras described herein induce a new binding pocket in Ras by driving formation of a high affinity tri-complex, or conjugate, between the Ras protein and the widely expressed cytosolic chaperone, cyclophilin A (CYPA).
- CYPA cyclophilin A
- the inventors believe that one way the inhibitory effect on Ras is effected by compounds of the invention and the complexes, or conjugates, they form is by steric occlusion of the interaction site between Ras and downstream effector molecules, such as RAF, which are required for propagating the oncogenic signal. Without being bound by theory, the inventors postulate that both covalent and non-covalent interactions of a compound of the present invention with Ras and the chaperone protein (e.g., cyclophilin A) may contribute to the inhibition of Ras activity.
- the chaperone protein e.g., cyclophilin A
- a compound of the present invention forms a covalent adduct with a side chain of a Ras protein (e.g., the -CH 2 -COOH or -CH 2 -COO- side chain of the aspartic acid at position 12 or 13 of a mutant Ras protein).
- Covalent adducts may also be formed with other side chains of Ras.
- non-covalent interactions may be at play: for example, van der Waals, hydrophobic, hydrophilic, and hydrogen bond interactions, and combinations thereof, may contribute to the ability of the compounds of the present invention to form complexes and act as Ras inhibitors.
- Ras proteins may be inhibited by compounds of the present invention (e.g., K-Ras, N-Ras, H-Ras, and mutants thereof at positions 12, 13 and 61, such as G12C, G12D, G12V, G12S, G13C, G13D, and Q61L, and others described herein).
- Methods of determining covalent adduct formation are known in the art.
- One method of determining covalent adduct formation is to perform a “cross-linking” assay, such as described in the Examples, and below: Note – the following protocol describes a procedure for monitoring cross-linking of K-Ras G12C (GMP-PNP) to a compound of the invention.
- This protocol may also be executed substituting other Ras proteins or nucleotides, such as K-Ras G12D.
- the purpose of this biochemical assay is to measure the ability of test compounds to covalently label nucleotide-loaded K-Ras isoforms.
- assay buffer containing 12.5 mM HEPES pH 7.4, 75 mM NaCl, 1 mM MgCl2, 1 mM BME, 5 ⁇ M Cyclophilin A and 2 ⁇ M test compound, a 5 ⁇ M stock of GMP-PNP-loaded K-Ras (1-169) G12C is diluted 10-fold to yield a final concentration of 0.5 ⁇ M; with final sample volume being 100 ⁇ L.
- the sample is incubated at 25 o C for a time period of up to 24 hours prior to quenching by the addition of 10 ⁇ L of 5% Formic Acid. Quenched samples are centrifuged at 15000 rpm for 15 minutes in a benchtop centrifuge before injecting a 10 ⁇ L aliquot onto a reverse phase C4 column and eluting into the mass spectrometer with an increasing acetonitrile gradient in the mobile phase. Analysis of raw data may be carried out using Waters MassLynx MS software, with % bound calculated from the deconvoluted protein peaks for labeled and unlabeled K-Ras.
- a compound, or pharmaceutically acceptable salt thereof having the structure of Formula I: Formula I wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 10- membered heteroarylene;
- R 9 is optionally substituted C 1 -C 6 alkyl, optionally substituted C 1 -C 6 heteroalkyl, optionally substituted 3 to 6-membered cycloalkyl, or optionally substituted 3 to 7-membered heterocycloalkyl.
- R 34 is hydrogen.
- G is optionally substituted C 1 -C 4 heteroalkylene.
- a compound of the present invention has the structure of Formula Ia, or a pharmaceutically acceptable salt thereof: wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6- membered heteroarylene;
- B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -N(R 11 )C(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene;
- X 2 is NH. In some embodiments, X 3 is CH. In some embodiments of compounds of the present invention, R 11 is hydrogen. In some embodiments, R 11 is C 1 -C 3 alkyl, such as methyl.
- a compound of the present invention has the structure of Formula Ib, or a pharmaceutically acceptable salt thereof: Formula Ib wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6- membered heteroarylene;
- B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene;
- X 1 is optionally substituted C 1 -C 2 alkylene. In some embodiments, X 1 is methylene. In some embodiments of compounds of the present invention, R 4 is hydrogen. In some embodiments of compounds of the present invention, R 5 is hydrogen. In some embodiments, R 5 is C 1 -C 4 alkyl optionally substituted with halogen. In some embodiments, R 5 is methyl. In some embodiments of compounds of the present invention, Y 4 is C. In some embodiments, R 4 is hydrogen. In some embodiments, Y 5 is CH. In some embodiments, Y 6 is CH. In some embodiments, Y 1 is C. In some embodiments, Y 2 is C.
- a compound of the present invention has the structure of Formula Ic, or a pharmaceutically acceptable salt thereof: Formula Ic wherein A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-member
- R 6 is hydrogen.
- R 2 is hydrogen, cyano, optionally substituted C 1 -C 6 alkyl, optionally substituted 3 to 6-membered cycloalkyl, or optionally substituted 3 to 6- membered heterocycloalkyl.
- R 2 is optionally substituted C 1 -C 6 alkyl, such as ethyl.
- R 7 is optionally substituted C 1 -C 3 alkyl.
- R 7 is C 1 -C 3 alkyl.
- R 8 is optionally substituted C 1 -C 3 alkyl.
- R 8 is C 1 -C 3 alkyl.
- a compound of the present invention has the structure of Formula Id, or a pharmaceutically acceptable salt thereof: Formula Id wherein A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene; L is absent or a linker
- R 1 is 5 to 10-membered heteroaryl. In some embodiments, R 1 is optionally substituted 6-membered aryl or optionally substituted 6-membered heteroaryl. In some embodiments, a compound of the present invention has the structure of Formula Ie, or a pharmaceutically acceptable salt thereof: Formula Ie wherein A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered
- X e is N. In some embodiments, X e is CH. In some embodiments of compounds of the present invention, R 12 is optionally substituted C 1 -C 6 heteroalkyl. In some embodiments, R 12 is In some embodiments, .
- a compound of the present invention has the structure of Formula If, or a pharmaceutically acceptable salt thereof: wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6- membered heteroarylene;
- B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -N(R 11 )C(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene;
- a compound of the present invention has the structure of Formula VI, or a pharmaceutically acceptable salt thereof: Formula VI wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene (e.g., phenyl or phenol), or optionally substituted 5 to 10-membered heteroarylene;
- a compound of the present invention has the structure of Formula VIa, or a pharmaceutically acceptable salt thereof:
- A is optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene (e.g., phenyl or phenol), or optionally substituted 5 to 6-membered heteroarylene
- B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene
- L is absent or a linker
- W is a cross-linking group comprising a carbodiimide, an oxazoline, a thiazoline, a chloroethyl urea, a
- a compound of the present invention has the structure of Formula VIb, or a pharmaceutically acceptable salt thereof: Formula VIb wherein A optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene (e.g., phenyl or phenol), or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene; L is absent or a linker; W is
- a compound of the present invention has the structure of Formula VII, or a pharmaceutically acceptable salt thereof: wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 10- membered heteroarylene;
- A is optionally substituted 6- membered arylene.
- A has the structure: wherein R 13 is hydrogen, hydroxy, amino, optionally substituted C 1 -C 6 alkyl, or optionally substituted C 1 -C 6 heteroalkyl.
- R 13 is hydrogen.
- R 13 is hydroxy.
- B is -CHR 9 -.
- R 9 is optionally substituted C 1 -C 6 alkyl or optionally substituted 3 to 6-membered cycloalkyl.
- R 9 is: , , . In some embodiments, .
- R 9 is optionally substituted C 1 -C 6 alkyl, optionally substituted C 1 -C 6 heteroalkyl, optionally substituted 3 to 6-membered cycloalkyl, or optionally substituted 3 to 7- membered heterocycloalkyl.
- B is optionally substituted 6-membered arylene. In some embodiments, B is 6-membered arylene. In some embodiments, B is: .
- R 7 is methyl. In some embodiments of compounds of the present invention, R 8 is methyl.
- R 34 is hydrogen.
- the linker is the structure of Formula II: A 1 -(B 1 )f-(C 1 )g-(B 2 )h-(D 1 )-(B 3 )i-(C 2 )j-(B 4 )k–A 2 Formula II where A 1 is a bond between the linker and B; A 2 is a bond between W and the linker; B 1 , B 2 , B 3 , and B 4 each, independently, is selected from optionally substituted C 1 -C 2 alkylene, optionally substituted C 1 -C 3 heteroalkylene, O, S, and NR N ; R N is hydrogen, optionally substituted C 1 -C 4 alkyl, optionally substituted C 2 -C 4 alkenyl, optionally substituted C 2 -C 4 alkynyl, optionally substituted 3 to 14-membered heterocycloalkyl, optionally substituted 6 to 10-membered aryl, or optionally substituted C1-
- the linker is acyclic.
- the linker has the structure of Formula IIa: Formula IIa wherein X a is absent or N; R 14 is absent, hydrogen or optionally substituted C 1 -C 6 alkyl; and L 2 is absent, -SO 2 -, optionally substituted C 1 -C 4 alkylene or optionally substituted C 1 -C 4 heteroalkylene, wherein at least one of X a , R 14 , or L 2 is present.
- the linker has the structure: some embodiments, the linker is or a comprises a cyclic group.
- the linker has the structure of Formula IIb: wherein o is 0 or 1; R 15 is hydrogen or optionally substituted C 1 -C 6 alkyl; Cy is optionally substituted 3 to 8-membered cycloalkylene, optionally substituted 3 to 8- membered heterocycloalkylene, optionally substituted 6-10 membered arylene, or optionally substituted 5 to 10-membered heteroarylene; and L 3 is absent, -SO 2 -, optionally substituted C 1 -C 4 alkylene or optionally substituted C 1 -C 4 heteroalkylene.
- the linker has the structure: , , , , , .
- a linker of Formula II is selected from the group consisting of
- W comprises a carbodiimide.
- W has the structure of Formula IIIa: Formula IIIa wherein R 14 is optionally substituted C 1 -C 6 alkyl, optionally substituted C 1 -C 6 heteroalkyl, optionally substituted 3 to 8-membered cycloalkyl, optionally substituted 6 to 10-membered aryl, optionally substituted 3 to 14-membered heterocycloalkyl, or optionally substituted 5 to 10-membered heteroaryl.
- W has the structure:
- W comprises an oxazoline or thiazoline.
- W has the structure of Formula IIIb: Formula IIb wherein X 1 is O or S; X 2 is absent or NR 19 ; R 15 , R 16 , R 17 , and R 18 are, independently, hydrogen or optionally substituted C 1 -C 6 alkyl; and R 19 is hydrogen, C(O)(optionally substituted C 1 -C 6 alkyl), optionally substituted C 1 -C 6 alkyl, optionally substituted 6 to 10-membered aryl, optionally substituted 3 to 14-membered heterocycloalkyl, or optionally substituted 5 to 10-membered heteroaryl.
- W is .
- W comprises a chloroethyl urea, a chloroethyl thiourea, a chloroethyl carbamate, or a chloroethyl thiocarbamate.
- W has the structure of Formula IIIc: Formula IIIc wherein X 3 is O or S; X 4 is O, S, NR 26 ; R 21 , R 22 , R 23 , R 24 , and R 26 are, independently, hydrogen or optionally substituted C 1 -C 6 alkyl; and R 25 is hydrogen, optionally substituted C 1 -C 6 alkyl, optionally substituted 6 to 10-membered aryl, optionally substituted 3 to 14-membered heterocycloalkyl, or optionally substituted 5 to 10-membered heteroaryl.
- W is . In some embodiments, W comprises an aziridine. In some embodiments, W has the structure of Formula IIId1, Formula IIId2, Formula IIId3, or Formula IIId4: Formula IIId1 Formula IIId2 Formula IIId3 Formula IIId4 wherein X 5 is absent or NR 30 ; Y is absent or C(O), C(S), S(O), SO 2 , or optionally substituted C 1 -C 3 alkylene; R 27 is hydrogen, -C(O)R 32 , -C(O)OR 32 , -SOR 33 , -SO 2 R 33 , optionally substituted C 1 -C 6 alkyl, optionally substituted 6 to 10-membered aryl, optionally substituted 3 to 14-membered heterocycloalkyl, or optionally substituted 5 to 10-membered heteroaryl; R 28 and R 29 are, independently, hydrogen, CN, C(O)R 31 , CO 2 R 31 , C(O)R 31 R 31 optionally substituted
- W is a cross-linking group bound to an organic moiety that is a Ras binding moiety, i.e., RBM-W, wherein upon contact of an RBM-W compound with a Ras protein, the RBM- W binds to the Ras protein to form a conjugate.
- RBM-W Ras binding moiety
- the W moiety of an RBM-W compound may bind, e.g., cross-link, with an amino acid of the Ras protein to form the conjugate.
- the Ras binding moiety is a K-Ras binding moiety.
- the K-Ras binding moiety binds to a residue of a K-Ras Switch-II binding pocket of the K-Ras protein.
- the Ras binding moiety is an H-Ras binding moiety that binds to a residue of an H-Ras Switch-II binding pocket of an H-Ras protein.
- the Ras binding moiety is an N-Ras binding moiety that binds to a residue of an N-Ras Switch-II binding pocket of an N-Ras protein.
- the W of an RBM-W compound may comprise any W described herein.
- the Ras binding moiety typically has a molecular weight of under 1200 Da. See, e.g., see, e.g., Johnson et al., 292:12981-12993 (2017) for a description of Ras protein domains, incorporated herein by reference.
- a compound of the present invention is selected from Table 1, or a pharmaceutically acceptable salt or stereoisomer thereof. In some embodiments, a compound of the present invention is selected from Table 1, or a pharmaceutically acceptable salt or atropisomer thereof. Table 1: Certain Compounds of the Present Invention
- a compound of the present invention is or acts as a prodrug, such as with respect to administration to a cell or to a subject in need thereof.
- pharmaceutical compositions comprising a compound of the present invention, or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable excipient.
- a conjugate, or salt thereof comprising the structure of Formula IV: M-L-P Formula IV wherein L is a linker; P is a monovalent organic moiety; and M has the structure of Formula Va: wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6- membered heteroarylene;
- the conjugate has the structure of Formula IV: M-L-P Formula IV wherein L is a linker; P is a monovalent organic moiety; and M has the structure of Formula Vb: wherein the dotted lines represent zero, one, two, three, or four non-adjacent double bonds;
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6- membered heteroarylene;
- B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -N(R 11 )C(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optional
- the conjugate has the structure of Formula IV: M-L-P Formula IV wherein L is a linker; P is a monovalent organic moiety; and M has the structure of Formula Vc: Formula Vc wherein A is optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene (e.g., phenyl or phenol), or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene; X 1 is optionally substituted C 1 -C 2 alkylene, NR, O, or S(O)n; X 2 is
- X e is N and X f is CH. In some embodiments, X e is CH and X f is N.
- the conjugate has the structure of Formula IV: M-L-P Formula IV wherein L is a linker; P is a monovalent organic moiety; and M has the structure of Formula Vd: Formula Vd wherein A optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene (e.g., phenyl or phenol), or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene,
- the linker has the structure of Formula II: A 1 -(B 1 )f-(C 1 )g-(B 2 )h-(D 1 )-(B 3 )i-(C 2 )j-(B 4 )k–A 2 Formula II where A 1 is a bond between the linker and B; A 2 is a bond between P and the linker; B 1 , B 2 , B 3 , and B 4 each, independently, is selected from optionally substituted C 1 -C 2 alkylene, optionally substituted C 1 -C 3 heteroalkylene, O, S, and NR N ; R N is hydrogen, optionally substituted C 1 -C 4 alkyl, optionally substituted C 2 -C 4 alkenyl, optionally substituted C 2 -C
- the linker is bound to the monovalent organic moiety through a bond to a carboxyl group of an amino acid residue of the monovalent organic moiety.
- the monovalent organic moiety is a protein.
- the protein is a Ras protein.
- the Ras protein is K- Ras G12D or K-Ras G13D. Further provided is a method of treating cancer in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof.
- the cancer may, for example, be pancreatic cancer, colorectal cancer, non-small cell lung cancer, acute myeloid leukemia, multiple myeloma, thyroid gland adenocarcinoma, a myelodysplastic syndrome, or squamous cell lung carcinoma.
- the cancer comprises a Ras mutation, such as K-Ras G12D or K-Ras G13D. Other Ras mutations are described herein. Further provided is a method of treating a Ras protein-related disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof.
- the method comprising contacting the cell with an effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof.
- the Ras protein is K-Ras G12D or K-Ras G13D.
- Other Ras proteins are described herein.
- the cell may be a cancer cell, such as a pancreatic cancer cell, a colorectal cancer cell, a non-small cell lung cancer cell, an acute myeloid leukemia cell, a multiple myeloma cell, a thyroid gland adenocarcinoma cell, a myelodysplastic syndrome cell, or a squamous cell lung carcinoma cell. Other cancer types are described herein.
- the cell may be in vivo or in vitro.
- one stereoisomer may exhibit better inhibition than another stereoisomer.
- one atropisomer may exhibit inhibition, whereas the other atropisomer may exhibit little or no inhibition.
- a method or use described herein further comprises administering an additional anti-cancer therapy.
- the additional anti-cancer therapy is an EGFR inhibitor, a second Ras inhibitor, a SHP2 inhibitor, a SOS1 inhibitor, a Raf inhibitor, a MEK inhibitor, an ERK inhibitor, a PI3K inhibitor, a PTEN inhibitor, an AKT inhibitor, an mTORC1 inhibitor, a BRAF inhibitor, a PD-L1 inhibitor, a PD-1 inhibitor, a CDK4/6 inhibitor, a HER2 inhibitor, or a combination thereof.
- the additional anticancer therapy is a SHP2 inhibitor.
- Other additional anti-cancer therapies are described herein.
- the compounds described herein may be made from commercially available starting materials or synthesized using known organic, inorganic, or enzymatic processes.
- the compounds of the present invention can be prepared in a number of ways well known to those skilled in the art of organic synthesis.
- compounds of the present invention can be synthesized using the methods described in the Schemes below, together with synthetic methods known in the art of synthetic organic chemistry, or variations thereon as appreciated by those skilled in the art. These methods include but are not limited to those methods described in the Schemes below.
- Compounds of Table 1 herein were prepared using methods disclosed herein or were prepared using methods disclosed herein combined with the knowledge of one of skill in the art.
- Compounds of Table 2 may be prepared using methods disclosed herein or may be prepared using methods disclosed herein combined with the knowledge of one of skill in the art.
- Methyl-amino-hexahydropyridazine-3-carboxylate-boronic ester (2) can be prepared in three steps, including protection, iridium catalyst mediated borylation, and coupling with methyl (S)- hexahydropyridazine-3-carboxylate.
- the final macrocyclic esters can be made by coupling of methyl-amino-hexahydropyridazine-3- carboxylate-boronic ester (2) and aryl-3-(5-bromo-1-ethyl-1H-indol-3-yl)-2,2-dimethylpropan-1-ol (1) in the presence of Pd catalyst followed by hydrolysis and macrolactonization steps to result in an appropriately protected macrocyclic intermediate (4). Additional deprotection or functionalization steps are required to produce a final compound.
- macrocyclic esters can be prepared as described in Scheme 2.
- An appropriately protected bromo-indolyl (5) can be coupled in the presence of Pd catalyst with boronic ester (3), followed by iodination, deprotection, and ester hydrolysis.
- Subsequent coupling with methyl (S)- hexahydropyridazine-3-carboxylate, followed by hydrolysis and macrolactonization can result in iodo intermediate (6).
- Coupling in the presence of Pd catalyst with an appropriately substituted boronic ester can yield fully a protected macrocycle (4). Additional deprotection or functionalization steps are required to produce a final compound.
- Scheme 3 General synthesis of aziridine containing macrocycles As shown in Scheme 3, compounds of this type may be prepared by the reaction of an appropriate amine (1) with an aziridine containing carboxylic acid (2) in the presence of standard amide coupling reagents, followed by deprotection of the aziridine, if R 1 is a protecting group, and deprotection of the phenol, if required, to produce the final compound (4).
- Scheme 4 General synthesis of aziridine containing macrocycles As shown in Scheme 3, compounds of this type may be prepared by the reaction of an appropriate amine (1) with an aziridine containing carboxylic acid (2) in the presence of standard amide coupling reagents, followed by deprotection of the aziridine, if R 1 is a protecting group, and deprotection of the phenol, if required, to produce the final compound (4).
- compositions and Methods of Use Pharmaceutical Compositions and Methods of Administration
- the compounds with which the invention is concerned are Ras inhibitors, and are useful in the treatment of cancer. Accordingly, one embodiment of the present invention provides pharmaceutical compositions containing a compound of the invention or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable excipient, as well as methods of using the compounds of the invention to prepare such compositions.
- the term “pharmaceutical composition” refers to a compound, such as a compound of the present invention, or a pharmaceutically acceptable salt thereof, formulated together with a pharmaceutically acceptable excipient.
- a compound is present in a pharmaceutical composition in unit dose amount appropriate for administration in a therapeutic regimen that shows a statistically significant probability of achieving a predetermined therapeutic effect when administered to a relevant population.
- compositions may be specially formulated for administration in solid or liquid form, including those adapted for the following: oral administration, for example, drenches (aqueous or non-aqueous solutions or suspensions), tablets, e.g., those targeted for buccal, sublingual, and systemic absorption, boluses, powders, granules, pastes for application to the tongue; parenteral administration, for example, by subcutaneous, intramuscular, intravenous or epidural injection as, for example, a sterile solution or suspension, or sustained-release formulation; topical application, for example, as a cream, ointment, or a controlled-release patch or spray applied to the skin, lungs, or oral cavity; intravaginally or intrarectally, for example, as a pessary, cream, or foam; sublingually; ocularly; transdermally; or nasally, pulmonary, and to other mucosal surfaces.
- oral administration for example, drenches (aqueous or non-aqueous solutions or suspension
- a “pharmaceutically acceptable excipient,” as used herein, refers any inactive ingredient (for example, a vehicle capable of suspending or dissolving the active compound) having the properties of being nontoxic and non-inflammatory in a subject.
- Typical excipients include, for example: antiadherents, antioxidants, binders, coatings, compression aids, disintegrants, dyes (colors), emollients, emulsifiers, fillers (diluents), film formers or coatings, flavors, fragrances, glidants (flow enhancers), lubricants, preservatives, printing inks, sorbents, suspensing or dispersing agents, sweeteners, or waters of hydration.
- Excipients include, but are not limited to: butylated optionally substituted hydroxyltoluene (BHT), calcium carbonate, calcium phosphate (dibasic), calcium stearate, croscarmellose, crosslinked polyvinyl pyrrolidone, citric acid, crospovidone, cysteine, ethylcellulose, gelatin, optionally substituted hydroxylpropyl cellulose, optionally substituted hydroxylpropyl methylcellulose, lactose, magnesium stearate, maltitol, mannitol, methionine, methylcellulose, methyl paraben, microcrystalline cellulose, polyethylene glycol, polyvinyl pyrrolidone, povidone, pregelatinized starch, propyl paraben, retinyl palmitate, shellac, silicon dioxide, sodium carboxymethyl cellulose, sodium citrate, sodium starch glycolate, sorbitol, starch (corn), stearic acid, stearic acid
- a composition includes at least two different pharmaceutically acceptable excipients.
- compositions described herein may be provided or utilized in salt form, e.g., a pharmaceutically acceptable salt form, unless expressly stated to the contrary.
- pharmaceutically acceptable salt refers to those salts of the compounds described herein that are, within the scope of sound medical judgment, suitable for use in contact with the tissues of humans and other animals without undue toxicity, irritation, allergic response and the like, and are commensurate with a reasonable benefit/risk ratio.
- Pharmaceutically acceptable salts are well known in the art. For example, pharmaceutically acceptable salts are described in: Berge et al., J. Pharmaceutical Sciences 66:1-19, 1977 and in Pharmaceutical Salts: Properties, Selection, and Use, (Eds. P.H.
- the salts can be prepared in situ during the final isolation and purification of the compounds described herein or separately by reacting the free base group with a suitable organic acid.
- the compounds of the invention may have ionizable groups so as to be capable of preparation as pharmaceutically acceptable salts.
- These salts may be acid addition salts involving inorganic or organic acids or the salts may, in the case of acidic forms of the compounds of the invention, be prepared from inorganic or organic bases.
- the compounds are prepared or used as pharmaceutically acceptable salts prepared as addition products of pharmaceutically acceptable acids or bases.
- Suitable pharmaceutically acceptable acids and bases are well-known in the art, such as hydrochloric, sulfuric, hydrobromic, acetic, lactic, citric, or tartaric acids for forming acid addition salts, and potassium hydroxide, sodium hydroxide, ammonium hydroxide, caffeine, various amines, and the like for forming basic salts. Methods for preparation of the appropriate salts are well-established in the art.
- Representative acid addition salts include acetate, adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphorsulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fumarate, glucoheptonate, glycerophosphate, hemisulfate, heptonate, hexanoate, hydrobromide, hydrochloride, hydroiodide, 2-optionally substituted hydroxyl-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate,
- alkali or alkaline earth metal salts include sodium, lithium, potassium, calcium, magnesium, and the like, as well as nontoxic ammonium, quaternary ammonium, and amine cations, including, but not limited to ammonium, tetramethylammonium, tetraethylammonium, methylamine, dimethylamine, trimethylamine, triethylamine, ethylamine, and the like.
- the term “subject” refers to any member of the animal kingdom. In some embodiments, “subject” refers to humans, at any stage of development. In some embodiments, “subject” refers to a human patient. In some embodiments, “subject” refers to non-human animals.
- the non-human animal is a mammal (e.g., a rodent, a mouse, a rat, a rabbit, a monkey, a dog, a cat, a sheep, cattle, a primate, or a pig).
- subjects include, but are not limited to, mammals, birds, reptiles, amphibians, fish, or worms.
- a subject may be a transgenic animal, genetically-engineered animal, or a clone.
- the term “dosage form” refers to a physically discrete unit of a compound (e.g., a compound of the present invention) for administration to a subject. Each unit contains a predetermined quantity of compound.
- such quantity is a unit dosage amount (or a whole fraction thereof) appropriate for administration in accordance with a dosing regimen that has been determined to correlate with a desired or beneficial outcome when administered to a relevant population (i.e., with a therapeutic dosing regimen).
- a dosing regimen refers to a set of unit doses (typically more than one) that are administered individually to a subject, typically separated by periods of time.
- a given therapeutic compound e.g., a compound of the present invention
- has a recommended dosing regimen which may involve one or more doses.
- a dosing regimen comprises a plurality of doses each of which are separated from one another by a time period of the same length; in some embodiments, a dosing regimen comprises a plurality of doses and at least two different time periods separating individual doses. In some embodiments, all doses within a dosing regimen are of the same unit dose amount. In some embodiments, different doses within a dosing regimen are of different amounts.
- a dosing regimen comprises a first dose in a first dose amount, followed by one or more additional doses in a second dose amount different from the first dose amount. In some embodiments, a dosing regimen comprises a first dose in a first dose amount, followed by one or more additional doses in a second dose amount same as the first dose amount. In some embodiments, a dosing regimen is correlated with a desired or beneficial outcome when administered across a relevant population (i.e., is a therapeutic dosing regimen).
- a “therapeutic regimen” refers to a dosing regimen whose administration across a relevant population is correlated with a desired or beneficial therapeutic outcome.
- treatment refers to any administration of a substance (e.g., a compound of the present invention) that partially or completely alleviates, ameliorates, relieves, inhibits, delays onset of, reduces severity of, or reduces incidence of one or more symptoms, features, or causes of a particular disease, disorder, or condition.
- a substance e.g., a compound of the present invention
- such treatment may be administered to a subject who does not exhibit signs of the relevant disease, disorder or condition, or of a subject who exhibits only early signs of the disease, disorder, or condition.
- treatment may be administered to a subject who exhibits one or more established signs of the relevant disease, disorder, or condition.
- treatment may be of a subject who has been diagnosed as suffering from the relevant disease, disorder, or condition. In some embodiments, treatment may be of a subject known to have one or more susceptibility factors that are statistically correlated with increased risk of development of the relevant disease, disorder, or condition.
- the term “therapeutically effective amount” means an amount that is sufficient, when administered to a population suffering from or susceptible to a disease, disorder, or condition in accordance with a therapeutic dosing regimen, to treat the disease, disorder, or condition. In some embodiments, a therapeutically effective amount is one that reduces the incidence or severity of, or delays onset of, one or more symptoms of the disease, disorder, or condition.
- a therapeutically effective amount does not in fact require successful treatment be achieved in a particular individual. Rather, a therapeutically effective amount may be that amount that provides a particular desired pharmacological response in a significant number of subjects when administered to patients in need of such treatment. It is specifically understood that particular subjects may, in fact, be “refractory” to a “therapeutically effective amount.” In some embodiments, reference to a therapeutically effective amount may be a reference to an amount as measured in one or more specific tissues (e.g., a tissue affected by the disease, disorder or condition) or fluids (e.g., blood, saliva, serum, sweat, tears, urine).
- tissue e.g., a tissue affected by the disease, disorder or condition
- fluids e.g., blood, saliva, serum, sweat, tears, urine.
- a therapeutically effective amount may be formulated or administered in a single dose. In some embodiments, a therapeutically effective amount may be formulated or administered in a plurality of doses, for example, as part of a dosing regimen.
- the compounds of the invention, or a pharmaceutically acceptable salt thereof can be formulated as pharmaceutical or veterinary compositions.
- the mode of administration, and the type of treatment desired, e.g., prevention, prophylaxis, or therapy the compounds, or a pharmaceutically acceptable salt thereof, are formulated in ways consonant with these parameters.
- compositions can be prepared according to conventional mixing, granulating, or coating methods, respectively, and the present pharmaceutical compositions can contain from about 0.1% to about 99%, from about 5% to about 90%, or from about 1% to about 20% of a compound of the present invention, or pharmaceutically acceptable salt thereof, by weight or volume.
- compounds, or a pharmaceutically acceptable salt thereof, described herein may be present in amounts totaling 1-95% by weight of the total weight of a composition, such as a pharmaceutical composition.
- the composition may be provided in a dosage form that is suitable for intraarticular, oral, parenteral (e.g., intravenous, intramuscular), rectal, cutaneous, subcutaneous, topical, transdermal, sublingual, nasal, vaginal, intravesicular, intraurethral, intrathecal, epidural, aural, or ocular administration, or by injection, inhalation, or direct contact with the nasal, genitourinary, reproductive, or oral mucosa.
- parenteral e.g., intravenous, intramuscular
- rectal cutaneous, subcutaneous, topical, transdermal, sublingual, nasal, vaginal, intravesicular, intraurethral, intrathecal, epidural, aural, or ocular administration, or by injection, inhalation, or direct contact with the nasal, gen
- the pharmaceutical composition may be in the form of, e.g., tablets, capsules, pills, powders, granulates, suspensions, emulsions, solutions, gels including hydrogels, pastes, ointments, creams, plasters, drenches, osmotic delivery devices, suppositories, enemas, injectables, implants, sprays, preparations suitable for iontophoretic delivery, or aerosols.
- the compositions may be formulated according to conventional pharmaceutical practice.
- the term “administration” refers to the administration of a composition (e.g., a compound, or a preparation that includes a compound as described herein) to a subject or system.
- Administration to an animal subject may be by any appropriate route.
- administration may be bronchial (including by bronchial instillation), buccal, enteral, interdermal, intra-arterial, intradermal, intragastric, intramedullary, intramuscular, intranasal, intraperitoneal, intrathecal, intravenous, intraventricular, mucosal, nasal, oral, rectal, subcutaneous, sublingual, topical, tracheal (including by intratracheal instillation), transdermal, vaginal, or vitreal.
- Formulations may be prepared in a manner suitable for systemic administration or topical or local administration.
- Systemic formulations include those designed for injection (e.g., intramuscular, intravenous or subcutaneous injection) or may be prepared for transdermal, transmucosal, or oral administration.
- a formulation will generally include a diluent as well as, in some cases, adjuvants, buffers, preservatives and the like.
- Compounds, or a pharmaceutically acceptable salt thereof can be administered also in liposomal compositions or as microemulsions.
- formulations can be prepared in conventional forms as liquid solutions or suspensions or as solid forms suitable for solution or suspension in liquid prior to injection or as emulsions. Suitable excipients include, for example, water, saline, dextrose, glycerol, and the like.
- compositions may also contain amounts of nontoxic auxiliary substances such as wetting or emulsifying agents, pH buffering agents, and the like, such as, for example, sodium acetate, sorbitan monolaurate, and so forth.
- auxiliary substances such as wetting or emulsifying agents, pH buffering agents, and the like, such as, for example, sodium acetate, sorbitan monolaurate, and so forth.
- sustained release systems for drugs have also been devised. See, for example, U.S. Patent No.5,624,677.
- Systemic administration may also include relatively noninvasive methods such as the use of suppositories, transdermal patches, transmucosal delivery, and intranasal administration.
- Oral administration is also suitable for compounds of the invention, or pharmaceutically acceptable salts thereof. Suitable forms include syrups, capsules, and tablets, as is understood in the art.
- kits that contain, e.g., two pills, a pill and a powder, a suppository and a liquid in a vial, two topical creams, etc.
- the kit can include optional components that aid in the administration of the unit dose to subjects, such as vials for reconstituting powder forms, syringes for injection, customized IV delivery systems, inhalers, etc.
- the unit dose kit can contain instructions for preparation and administration of the compositions.
- the kit may be manufactured as a single use unit dose for one subject, multiple uses for a particular subject (at a constant dose or in which the individual compounds, or a pharmaceutically acceptable salt thereof, may vary in potency as therapy progresses); or the kit may contain multiple doses suitable for administration to multiple subjects (“bulk packaging”).
- the kit components may be assembled in cartons, blister packs, bottles, tubes, and the like.
- Formulations for oral use include tablets containing the active ingredient(s) in a mixture with non-toxic pharmaceutically acceptable excipients.
- excipients may be, for example, inert diluents or fillers (e.g., sucrose, sorbitol, sugar, mannitol, microcrystalline cellulose, starches including potato starch, calcium carbonate, sodium chloride, lactose, calcium phosphate, calcium sulfate, or sodium phosphate); granulating and disintegrating agents (e.g., cellulose derivatives including microcrystalline cellulose, starches including potato starch, croscarmellose sodium, alginates, or alginic acid); binding agents (e.g., sucrose, glucose, sorbitol, acacia, alginic acid, sodium alginate, gelatin, starch, pregelatinized starch, microcrystalline cellulose, magnesium aluminum silicate, carboxymethylcellulose sodium, methylcellulose, optionally substituted hydroxylpropyl methylcellulose, ethylcellulose, polyvinylpyrrolidone, or polyethylene glycol); and lubricating agents, glidants
- Other pharmaceutically acceptable excipients can be colorants, flavoring agents, plasticizers, humectants, buffering agents, and the like.
- Two or more compounds may be mixed together in a tablet, capsule, or other vehicle, or may be partitioned.
- the first compound is contained on the inside of the tablet, and the second compound is on the outside, such that a substantial portion of the second compound is released prior to the release of the first compound.
- Formulations for oral use may also be provided as chewable tablets, or as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent (e.g., potato starch, lactose, microcrystalline cellulose, calcium carbonate, calcium phosphate or kaolin), or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example, peanut oil, liquid paraffin, or olive oil.
- an inert solid diluent e.g., potato starch, lactose, microcrystalline cellulose, calcium carbonate, calcium phosphate or kaolin
- water or an oil medium for example, peanut oil, liquid paraffin, or olive oil.
- Powders, granulates, and pellets may be prepared using the ingredients mentioned above under tablets and capsules in a conventional manner using, e.g., a mixer, a fluid bed apparatus or a spray drying equipment.
- Dissolution or diffusion-controlled release can be achieved by appropriate coating of a tablet, capsule, pellet, or granulate formulation of compounds, or by incorporating the compound, or a pharmaceutically acceptable salt thereof, into an appropriate matrix.
- a controlled release coating may include one or more of the coating substances mentioned above or, e.g., shellac, beeswax, glycowax, castor wax, carnauba wax, stearyl alcohol, glyceryl monostearate, glyceryl distearate, glycerol palmitostearate, ethylcellulose, acrylic resins, dl-polylactic acid, cellulose acetate butyrate, polyvinyl chloride, polyvinyl acetate, vinyl pyrrolidone, polyethylene, polymethacrylate, methylmethacrylate, 2-optionally substituted hydroxylmethacrylate, methacrylate hydrogels, 1,3 butylene glycol, ethylene glycol methacrylate, or polyethylene glycols.
- the matrix material may also include, e.g., hydrated methylcellulose, carnauba wax and stearyl alcohol, carbopol 934, silicone, glyceryl tristearate, methyl acrylate-methyl methacrylate, polyvinyl chloride, polyethylene, or halogenated fluorocarbon.
- the liquid forms in which the compounds, or a pharmaceutically acceptable salt thereof, and compositions of the present invention can be incorporated for administration orally include aqueous solutions, suitably flavored syrups, aqueous or oil suspensions, and flavored emulsions with edible oils such as cottonseed oil, sesame oil, coconut oil, or peanut oil, as well as elixirs and similar pharmaceutical vehicles.
- the oral dosage of any of the compounds of the invention, or a pharmaceutically acceptable salt thereof will depend on the nature of the compound, and can readily be determined by one skilled in the art.
- a dosage may be, for example, about 0.001 mg to about 2000 mg per day, about 1 mg to about 1000 mg per day, about 5 mg to about 500 mg per day, about 100 mg to about 1500 mg per day, about 500 mg to about 1500 mg per day, about 500 mg to about 2000 mg per day, or any range derivable therein.
- the pharmaceutical composition may further comprise an additional compound having antiproliferative activity.
- compounds, or a pharmaceutically acceptable salt thereof will be formulated into suitable compositions to permit facile delivery.
- Each compound, or a pharmaceutically acceptable salt thereof, of a combination therapy may be formulated in a variety of ways that are known in the art.
- the first and second agents of the combination therapy may be formulated together or separately.
- the first and second agents are formulated together for the simultaneous or near simultaneous administration of the agents.
- the compounds and pharmaceutical compositions of the present invention can be formulated and employed in combination therapies, that is, the compounds and pharmaceutical compositions can be formulated with or administered concurrently with, prior to, or subsequent to, one or more other desired therapeutics or medical procedures.
- the particular combination of therapies (therapeutics or procedures) to employ in a combination regimen will take into account compatibility of the desired therapeutics or procedures and the desired therapeutic effect to be achieved.
- the therapies employed may achieve a desired effect for the same disorder, or they may achieve different effects (e.g., control of any adverse effects).
- Administration of each drug in a combination therapy, as described herein, can, independently, be one to four times daily for one day to one year, and may even be for the life of the subject. Chronic, long-term administration may be indicated.
- Methods of Use discloses a method of treating a disease or disorder that is characterized by aberrant Ras activity due to a Ras mutant.
- the disease or disorder is a cancer.
- a method of treating cancer in a subject in need thereof comprising administering to the subject a therapeutically effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition comprising such a compound or salt.
- the cancer is colorectal cancer, non-small cell lung cancer, small-cell lung cancer, pancreatic cancer, appendiceal cancer, melanoma, acute myeloid leukemia, small bowel cancer, ampullary cancer, germ cell cancer, cervical cancer, cancer of unknown primary origin, endometrial cancer, esophagogastric cancer, GI neuroendocrine cancer, ovarian cancer, sex cord stromal tumor cancer, hepatobiliary cancer, or bladder cancer.
- the cancer is appendiceal, endometrial or melanoma.
- the compounds of the present invention or pharmaceutically acceptable salts thereof, pharmaceutical compositions comprising such compounds or salts, and methods provided herein may be used for the treatment of a wide variety of cancers including tumors such as lung, prostate, breast, brain, skin, cervical carcinomas, testicular carcinomas, etc.
- tumor types such as astrocytic, breast, cervical, colorectal, endometrial, esophageal, gastric, head and neck, hepatocellular, laryngeal, lung, oral, ovarian, prostate, and thyroid carcinomas and sarcomas.
- cancers include, for example: Cardiac, for example: sarcoma (angiosarcoma, fibrosarcoma, rhabdomyosarcoma, liposarcoma), myxoma, rhabdomyoma, fibroma, lipoma, and teratoma; Lung, for example: bronchogenic carcinoma (squamous cell, undifferentiated small cell, undifferentiated large cell, adenocarcinoma), alveolar (bronchiolar) carcinoma, bronchial adenoma, sarcoma, lymphoma, chondromatous hamartoma, mesothelioma; Gastrointestinal, for example: esophagus (squamous cell carcinoma, adenocarcinoma, leiomyosarcoma, lymphoma), stomach (carcinoma, lymphoma, leiomyosarcoma), pancreas (ductal adenocar
- the Ras protein is wild-type (Ras WT ). Accordingly, in some embodiments, a compound of the present invention is employed in a method of treating a patient having a cancer comprising a Ras WT (e.g., K-Ras WT , H-Ras WT or N-Ras WT ). In some embodiments, the Ras protein is Ras amplification (e.g., K-Ras amp ). Accordingly, in some embodiments, a compound of the present invention is employed in a method of treating a patient having a cancer comprising a Ras amp (K-Ras amp , H-Ras amp or N-Ras amp ).
- a Ras WT e.g., K-Ras WT , H-Ras WT or N-Ras WT
- the Ras protein is Ras amplification (e.g., K-Ras amp ).
- a compound of the present invention is employed in a method of treating a patient having
- the cancer comprises a Ras mutation, such as a Ras mutation described herein.
- a mutation is selected from: (a) the following K-Ras mutants: G12D, G12V, G12C, G13D, G12R, G12A, Q61H, G12S, A146T, G13C, Q61L, Q61R, K117N, A146V, G12F, Q61K, L19F, Q22K, V14I, A59T, A146P, G13R, G12L, or G13V, and combinations thereof; (b) the following H-Ras mutants: Q61R, G13R, Q61K, G12S, Q61L, G12D, G13V, G13D, G12C, K117N, A59T, G12V, G13C, Q61H, G13S, A18V, D119N, G13N, A146T, A66T, G12A, A146V, G12N, or
- the cancer comprises a K-Ras mutation selected from the group consisting of G12C, G12D, G13C, G12V, G13D, G12R, G12S, Q61H, Q61K and Q61L.
- the cancer comprises an N-Ras mutation selected from the group consisting of G12C, Q61H, Q61K, Q61L, Q61P and Q61R.
- the cancer comprises an H-Ras mutation selected from the group consisting of Q61H and Q61L.
- the cancer comprises a Ras mutation selected from the group consisting of G12C, G13C, G12A, G12D, G13D, G12S, G13S, G12V and G13V. In some embodiments, the cancer comprises at least two Ras mutations selected from the group consisting of G12C, G13C, G12A, G12D, G13D, G12S, G13S, G12V and G13V. In some embodiments, a compound of the present invention inhibits more than one Ras mutant. For example, a compound may inhibit both K-Ras G12C and K-Ras G13C. A compound may inhibit both N-Ras G12C and K-Ras G12C.
- a compound may inhibit both N-Ras G12C and K-Ras G12C. In some embodiments, a compound may inhibit both K-Ras G12C and K-Ras G12D. In some embodiments, a compound may inhibit both K-Ras G12V and K-Ras G12C. In some embodiments, a compound may inhibit both K-Ras G12V and K-Ras G12S.
- a compound of the present invention inhibits Ras WT in addition to one or more additional Ras mutations (e.g., K, H or N- Ras WT and K-Ras G12D, G12V, G12C, G13D, G12R, G12A, Q61H, G12S, A146T, G13C, Q61L, Q61R, K117N, A146V, G12F, Q61K, L19F, Q22K, V14I, A59T, A146P, G13R, G12L, or G13V; K, H or N-Ras WT and H-Ras Q61R, G13R, Q61K, G12S, Q61L, G12D, G13V, G13D, G12C, K117N, A59T, G12V, G13C, Q61H, G13S, A18V, D119N, G13N, A146T, A66T, G12A, A146V, G12N, or
- a compound of the present invention inhibits Ras amp in addition to one or more additional Ras mutations (e.g., K-, H- or N-Ras amp and K-Ras G12D, G12V, G12C, G13D, G12R, G12A, Q61H, G12S, A146T, G13C, Q61L, Q61R, K117N, A146V, G12F, Q61K, L19F, Q22K, V14I, A59T, A146P, G13R, G12L, or G13V; K-, H- or N-Ras amp and H-Ras Q61R, G13R, Q61K, G12S, Q61L, G12D, G13V, G13D, G12C, K117N, A59T, G12V, G13C, Q61H, G13S, A18V, D119N, G13N, A146T, A66T, G12A, A146V, G12
- Ras mutations are known in the art. Such means include, but are not limited to direct sequencing, and utilization of a high-sensitivity diagnostic assay (with CE-IVD mark), e.g., as described in Domagala, et al., Pol J Pathol 3: 145-164 (2012), incorporated herein by reference in its entirety, including TheraScreen PCR; AmoyDx; PNAClamp; RealQuality; EntroGen; LightMix; StripAssay; Hybcell plexA; Devyser; Surveyor; Cobas; and TheraScreen Pyro. See, also, e.g., WO 2020/106640.
- the cancer is non-small cell lung cancer and the Ras mutation comprises a K-Ras mutation, such as K-Ras G12C, K-Ras G12V or K-Ras G12D.
- the cancer is colorectal cancer and the Ras mutation comprises a K-Ras mutation, such as K-Ras G12C, K- Ras G12V or K-Ras G12D.
- the cancer is pancreatic cancer and the Ras mutation comprises an K-Ras mutation, such as K-Ras G12D or K-Ras G12V.
- the cancer is pancreatic cancer and the Ras mutation comprises an N-Ras mutation, such as N-Ras G12D.
- the cancer is melanoma and the Ras mutation comprises an N-Ras mutation, such as N-Ras Q61R or N-Ras Q61K.
- the cancer is non-small cell lung cancer and the Ras protein is K-Ras amp .
- a compound may inhibit Ras WT (e.g., K-, H- or N-Ras WT ) or Ras amp (e.g., K-, H- or N-Ras amp ) as well.
- a cancer comprises a Ras mutation and an STK11 LOF , a KEAP1, an EPHA5 or an NF1 mutation.
- the cancer is non-small cell lung cancer and comprises a K-Ras G12C mutation. In some embodiments, the cancer is non-small cell lung cancer and comprises a K-Ras G12C mutation and an STK11 LOF mutation. In some embodiments, the cancer is non- small cell lung cancer and comprises a K-Ras G12C mutation and an STK11 LOF mutation. In some embodiments, a cancer comprises a K-Ras G13C Ras mutation and an STK11 LOF , a KEAP1, an EPHA5 or an NF1 mutation. In some embodiments, the cancer is non-small cell lung cancer and comprises a K- Ras G12D mutation.
- the cancer is non-small cell lung cancer and comprises a K- Ras G12V mutation. In some embodiments, the cancer is colorectal cancer and comprises a K-Ras G12C mutation. In some embodiments, the cancer is pancreatic cancer and comprises a K-Ras G12D mutation. In some embodiments, the cancer is pancreatic cancer and comprises a K-Ras G12V mutation. In some embodiments, the cancer is endometrial cancer and comprises a K-Ras G12C mutation. In some embodiments, the cancer is gastric cancer and comprises a K-Ras G12C mutation.
- a compound may inhibit Ras WT (e.g., K-, H- or N-Ras WT ) or Ras amp (e.g., K-, H- or N- Ras amp ) as well.
- Ras WT e.g., K-, H- or N-Ras WT
- Ras amp e.g., K-, H- or N- Ras amp
- a method of inhibiting a Ras protein in a cell the method comprising contacting the cell with an effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof.
- a method of inhibiting RAF-Ras binding the method comprising contacting the cell with an effective amount of a compound of the present invention, or a pharmaceutically acceptable salt thereof, is also provided.
- the cell may be a cancer cell.
- the cancer cell may be of any type of cancer described herein.
- the cell may be in vivo or in vitro.
- the methods of the invention may include a compound of the invention used alone or in combination with one or more additional therapies (e.g., non-drug treatments or therapeutic agents).
- the dosages of one or more of the additional therapies may be reduced from standard dosages when administered alone. For example, doses may be determined empirically from drug combinations and permutations or may be deduced by isobolographic analysis (e.g., Black et al., Neurology 65:S3-S6 (2005)).
- a compound of the present invention may be administered before, after, or concurrently with one or more of such additional therapies.
- dosages of a compound of the invention and dosages of the one or more additional therapies provide a therapeutic effect (e.g., synergistic or additive therapeutic effect).
- a compound of the present invention and an additional therapy such as an anti-cancer agent, may be administered together, such as in a unitary pharmaceutical composition, or separately and, when administered separately, this may occur simultaneously or sequentially. Such sequential administration may be close or remote in time.
- the additional therapy is the administration of side-effect limiting agents (e.g., agents intended to lessen the occurrence or severity of side effects of treatment).
- the compounds of the present invention can also be used in combination with a therapeutic agent that treats nausea.
- the one or more additional therapies includes a non-drug treatment (e.g., surgery or radiation therapy).
- the one or more additional therapies includes a therapeutic agent (e.g., a compound or biologic that is an anti-angiogenic agent, signal transduction inhibitor, antiproliferative agent, glycolysis inhibitor, or autophagy inhibitor).
- the one or more additional therapies includes a non-drug treatment (e.g., surgery or radiation therapy) and a therapeutic agent (e.g., a compound or biologic that is an anti-angiogenic agent, signal transduction inhibitor, antiproliferative agent, glycolysis inhibitor, or autophagy inhibitor).
- a therapeutic agent e.g., a compound or biologic that is an anti-angiogenic agent, signal transduction inhibitor, antiproliferative agent, glycolysis inhibitor, or autophagy inhibitor.
- the one or more additional therapies includes two therapeutic agents.
- the one or more additional therapies includes three therapeutic agents.
- the one or more additional therapies includes four or more therapeutic agents.
- Non-drug therapies examples include, but are not limited to, radiation therapy, cryotherapy, hyperthermia, surgery (e.g., surgical excision of tumor tissue), and T cell adoptive transfer (ACT) therapy.
- the compounds of the invention may be used as an adjuvant therapy after surgery.
- the compounds of the invention may be used as a neo-adjuvant therapy prior to surgery.
- Radiation therapy may be used for inhibiting abnormal cell growth or treating a hyperproliferative disorder, such as cancer, in a subject (e.g., mammal (e.g., human)). Techniques for administering radiation therapy are known in the art.
- Radiation therapy can be administered through one of several methods, or a combination of methods, including, without limitation, external-beam therapy, internal radiation therapy, implant radiation, stereotactic radiosurgery, systemic radiation therapy, radiotherapy, and permanent or temporary interstitial brachy therapy.
- brachy therapy refers to radiation therapy delivered by a spatially confined radioactive material inserted into the body at or near a tumor or other proliferative tissue disease site.
- the term is intended, without limitation, to include exposure to radioactive isotopes (e.g., At-211, I-131, I-125, Y-90, Re-186, Re-188, Sm-153, Bi-212, P-32, and radioactive isotopes of Lu).
- Suitable radiation sources for use as a cell conditioner of the present invention include both solids and liquids.
- the radiation source can be a radionuclide, such as I-125, I-131, Yb-169, Ir-192 as a solid source, I-125 as a solid source, or other radionuclides that emit photons, beta particles, gamma radiation, or other therapeutic rays.
- the radioactive material can also be a fluid made from any solution of radionuclide(s), e.g., a solution of I-125 or I-131, or a radioactive fluid can be produced using a slurry of a suitable fluid containing small particles of solid radionuclides, such as Au-198, or Y-90.
- the radionuclide(s) can be embodied in a gel or radioactive micro spheres.
- the compounds of the present invention can render abnormal cells more sensitive to treatment with radiation for purposes of killing or inhibiting the growth of such cells.
- this invention further relates to a method for sensitizing abnormal cells in a mammal to treatment with radiation which comprises administering to the mammal an amount of a compound of the present invention, which amount is effective to sensitize abnormal cells to treatment with radiation.
- the amount of the compound in this method can be determined according to the means for ascertaining effective amounts of such compounds described herein.
- the compounds of the present invention may be used as an adjuvant therapy after radiation therapy or as a neo-adjuvant therapy prior to radiation therapy.
- the non-drug treatment is a T cell adoptive transfer (ACT) therapy.
- the T cell is an activated T cell.
- the T cell may be modified to express a chimeric antigen receptor (CAR).
- CAR modified T (CAR-T) cells can be generated by any method known in the art.
- the CAR-T cells can be generated by introducing a suitable expression vector encoding the CAR to a T cell.
- a source of T cells Prior to expansion and genetic modification of the T cells, a source of T cells is obtained from a subject.
- T cells can be obtained from a number of sources, including peripheral blood mononuclear cells, bone marrow, lymph node tissue, cord blood, thymus tissue, tissue from a site of infection, ascites, pleural effusion, spleen tissue, and tumors. In certain embodiments of the present invention, any number of T cell lines available in the art may be used.
- the T cell is an autologous T cell.
- the T cells can be activated and expanded generally using methods as described, for example, in U.S. Patents 6,352,694; 6,534,055; 6,905,680; 6,692,964; 5,858,358; 6,887,466; 6,905,681; 7,144,575; 7,067,318; 7,172,869; 7,232,566; 7,175,843; 7,572,631; 5,883,223; 6,905,874; 6,797,514; and 6,867,041.
- Therapeutic agents A therapeutic agent may be a compound used in the treatment of cancer or symptoms associated therewith.
- a therapeutic agent may be a steroid.
- the one or more additional therapies includes a steroid.
- Suitable steroids may include, but are not limited to, 21- acetoxypregnenolone, alclometasone, algestone, amcinonide, beclomethasone, betamethasone, budesonide, chloroprednisone, clobetasol, clocortolone, cloprednol, corticosterone, cortisone, cortivazol, deflazacort, desonide, desoximetasone, dexamethasone, diflorasone, diflucortolone, difuprednate, enoxolone, fluazacort, fiucloronide, flumethasone, flunisolide, fluocinolone acetonide, fluocinonide, fluocortin butyl, fluocortolone, fluoromethol
- a therapeutic agent may be a biologic (e.g., cytokine (e.g., interferon or an interleukin such as IL- 2)) used in treatment of cancer or symptoms associated therewith.
- the biologic is an immunoglobulin-based biologic, e.g., a monoclonal antibody (e.g., a humanized antibody, a fully human antibody, an Fc fusion protein, or a functional fragment thereof) that agonizes a target to stimulate an anti-cancer response or antagonizes an antigen important for cancer.
- antibody-drug conjugates are also included.
- a therapeutic agent may be a T-cell checkpoint inhibitor.
- the checkpoint inhibitor is an inhibitory antibody (e.g., a monospecific antibody such as a monoclonal antibody).
- the antibody may be, e.g., humanized or fully human.
- the checkpoint inhibitor is a fusion protein, e.g., an Fc-receptor fusion protein.
- the checkpoint inhibitor is an agent, such as an antibody, that interacts with a checkpoint protein.
- the checkpoint inhibitor is an agent, such as an antibody, that interacts with the ligand of a checkpoint protein.
- the checkpoint inhibitor is an inhibitor (e.g., an inhibitory antibody or small molecule inhibitor) of CTLA-4 (e.g., an anti-CTLA-4 antibody or fusion a protein).
- the checkpoint inhibitor is an inhibitor or antagonist (e.g., an inhibitory antibody or small molecule inhibitor) of PD-1.
- the checkpoint inhibitor is an inhibitor or antagonist (e.g., an inhibitory antibody or small molecule inhibitor) of PDL-1.
- the checkpoint inhibitor is an inhibitor or antagonist (e.g., an inhibitory antibody or Fc fusion or small molecule inhibitor) of PDL-2 (e.g., a PDL-2/Ig fusion protein).
- the checkpoint inhibitor is an inhibitor or antagonist (e.g., an inhibitory antibody or small molecule inhibitor) of B7-H3, B7-H4, BTLA, HVEM, TIM3, GAL9, LAG3, VISTA, KIR, 2B4, CD160, CGEN-15049, CHK 1, CHK2, A2aR, B-7 family ligands, or a combination thereof.
- an inhibitor or antagonist e.g., an inhibitory antibody or small molecule inhibitor of B7-H3, B7-H4, BTLA, HVEM, TIM3, GAL9, LAG3, VISTA, KIR, 2B4, CD160, CGEN-15049, CHK 1, CHK2, A2aR, B-7 family ligands, or a combination thereof.
- the checkpoint inhibitor is pembrolizumab, nivolumab, PDR001 (NVS), REGN2810 (Sanofi/Regeneron), a PD-L1 antibody such as, e.g., avelumab, durvalumab, atezolizumab, pidilizumab, JNJ-63723283 (JNJ), BGB-A317 (BeiGene & Celgene), or a checkpoint inhibitor disclosed in Preusser, M. et al. (2015) Nat. Rev.
- a PD-L1 antibody such as, e.g., avelumab, durvalumab, atezolizumab, pidilizumab, JNJ-63723283 (JNJ), BGB-A317 (BeiGene & Celgene), or a checkpoint inhibitor disclosed in Preusser, M. et al. (2015) Nat. Rev.
- a therapeutic agent may be an anti-TIGIT antibody, such as MBSA43, BMS-986207, MK-7684, COM902, AB154, MTIG7192A, or OMP-313M32 (etigilimab).
- a therapeutic agent may be an agent that treats cancer or symptoms associated therewith (e.g., a cytotoxic agent, non-peptide small molecules, or other compound useful in the treatment of cancer or symptoms associated therewith, collectively, an “anti-cancer agent”).
- Anti-cancer agents can be, e.g., chemotherapeutics or targeted therapy agents.
- Anti-cancer agents include mitotic inhibitors, intercalating antibiotics, growth factor inhibitors, cell cycle inhibitors, enzymes, topoisomerase inhibitors, biological response modifiers, alkylating agents, antimetabolites, folic acid analogs, pyrimidine analogs, purine analogs and related inhibitors, vinca alkaloids, epipodopyyllotoxins, antibiotics, L-Asparaginase, topoisomerase inhibitors, interferons, platinum coordination complexes, anthracenedione substituted urea, methyl hydrazine derivatives, adrenocortical suppressant, adrenocorticosteroides, progestins, estrogens, antiestrogen, androgens, antiandrogen, and gonadotropin-releasing hormone analog.
- anti-cancer agents include leucovorin (LV), irenotecan, oxaliplatin, capecitabine, paclitaxel, and doxetaxel.
- the one or more additional therapies includes two or more anti-cancer agents.
- the two or more anti-cancer agents can be used in a cocktail to be administered in combination or administered separately. Suitable dosing regimens of combination anti-cancer agents are known in the art and described in, for example, Saltz et al., Proc. Am. Soc. Clin. Oncol.18:233a (1999), and Douillard et al., Lancet 355(9209):1041-1047 (2000).
- anti-cancer agents include Gleevec® (Imatinib Mesylate); Kyprolis® (carfilzomib); Velcade® (bortezomib); Casodex (bicalutamide); Iressa® (gefitinib); alkylating agents such as thiotepa and cyclosphosphamide; alkyl sulfonates such as busulfan, improsulfan and piposulfan; aziridines such as benzodopa, carboquone, meturedopa, and uredopa; ethylenimines and methylamelamines including altretamine, triethylenemelamine, triethylenephosphoramide, triethiylenethiophosphoramide and trimethylolomelamine; acetogenins (especially bullatacin and bullatacinone); a camptothecin (including the synthetic analogue topotecan); bryostatin; call
- dynemicin such as dynemicin A; bisphosphonates such as clodronate; an esperamicin; neocarzinostatin chromophore and related chromoprotein enediyne antiobiotic chromophores, aclacinomysins, actinomycin, authramycin, azaserine, bleomycins, cactinomycin, calicheamicin, carabicin, caminomycin, carminomycin, carzinophilin, chromomycins, dactinomycin, daunorubicin, detorubicin, 6-diazo- 5-oxo-L-norleucine, adriamycin (doxorubicin), morpholino-doxorubicin, cyanomorpholino-doxorubicin, 2-pyrrolino-doxorubicin, deoxydoxorubic
- anti-cancer agents include trastuzumab (Herceptin®), bevacizumab (Avastin®), cetuximab (Erbitux®), rituximab (Rituxan®), Taxol®, Arimidex®, ABVD, avicine, abagovomab, acridine carboxamide, adecatumumab, 17-N-allylamino-17-demethoxygeldanamycin, alpharadin, alvocidib, 3-aminopyridine-2-carboxaldehyde thiosemicarbazone, amonafide, anthracenedione, anti-CD22 immunotoxins, antineoplastics (e.g., cell-cycle nonspecific antineoplastic agents, and other antineoplastics described herein), antitumorigenic herbs, apaziquone, atiprimod, azathioprine, belotecan, bendamustine, BIBW 2992,
- anti-cancer agents include natural products such as vinca alkaloids (e.g., vinblastine, vincristine, and vinorelbine), epidipodophyllotoxins (e.g., etoposide and teniposide), antibiotics (e.g., dactinomycin (actinomycin D), daunorubicin, and idarubicin), anthracyclines, mitoxantrone, bleomycins, plicamycin (mithramycin), mitomycin, enzymes (e.g., L-asparaginase which systemically metabolizes L-asparagine and deprives cells which do not have the capacity to synthesize their own asparagine), antiplatelet agents, antiproliferative/antimitotic alkylating agents such as nitrogen mustards (e.g., mechlorethamine, cyclophosphamide and analogs, melphalan, and chlorambucil),
- nitrogen mustards
- an anti-cancer agent is selected from mechlorethamine, camptothecin, ifosfamide, tamoxifen, raloxifene, gemcitabine, Navelbine®, sorafenib, or any analog or derivative variant of the foregoing.
- the anti-cancer agent is a HER2 inhibitor.
- Non-limiting examples of HER2 inhibitors include monoclonal antibodies such as trastuzumab (Herceptin®) and pertuzumab (Perjeta®); small molecule tyrosine kinase inhibitors such as gefitinib (Iressa®), erlotinib (Tarceva®), pilitinib, CP- 654577, CP-724714, canertinib (CI 1033), HKI-272, lapatinib (GW-572016; Tykerb®), PKI-166, AEE788, BMS-599626, HKI-357, BIBW 2992, ARRY-334543, JNJ-26483327, and JNJ-26483327.
- monoclonal antibodies such as trastuzumab (Herceptin®) and pertuzumab (Perjeta®); small molecule tyrosine kinase inhibitors such as gefitinib (Iressa®), erlot
- an anti-cancer agent is an ALK inhibitor.
- ALK inhibitors include ceritinib, TAE-684 (NVP-TAE694), PF02341066 (crizotinib or 1066), alectinib; brigatinib; entrectinib; ensartinib (X-396); lorlatinib; ASP3026; CEP-37440; 4SC-203; TL-398; PLB1003; TSR-011; CT-707; TPX-0005, and AP26113. Additional examples of ALK kinase inhibitors are described in examples 3-39 of WO05016894.
- an anti-cancer agent is an inhibitor of a member downstream of a Receptor Tyrosine Kinase (RTK)/Growth Factor Receptor (e.g., a SHP2 inhibitor (e.g., SHP099, TNO155, RMC-4550, RMC-4630, JAB-3068, RLY-1971), a SOS1 inhibitor (e.g., BI-1701963, BI-3406), a Raf inhibitor, a MEK inhibitor, an ERK inhibitor, a PI3K inhibitor, a PTEN inhibitor, an AKT inhibitor, or an mTOR inhibitor (e.g., mTORC1 inhibitor or mTORC2 inhibitor).
- RTK Receptor Tyrosine Kinase
- Growth Factor Receptor e.g., a SHP2 inhibitor (e.g., SHP099, TNO155, RMC-4550, RMC-4630, JAB-3068, RLY-1971), a SOS1 inhibitor (e.
- the anti-cancer agent is JAB-3312.
- an anti-cancer agent is an additional Ras inhibitor (e.g., AMG 510, MRTX1257, MRTX849, ARS-853, ARS-1620, ARS-3248 (or JNJ-74699157), LY3499446), or a Ras vaccine, or another therapeutic modality designed to directly or indirectly decrease the oncogenic activity of Ras.
- Ras inhibitors that may be combined with a Ras inhibitor of the present invention are provided in the following, incorporated herein by reference in their entireties: WO 2020050890, WO 2020047192, WO 2020035031, WO 2020028706, WO 2019241157, WO 2019232419, WO 2019217691, WO 2019217307, WO 2019215203, WO 2019213526, WO 2019213516, WO 2019155399, WO 2019150305, WO 2019110751, WO 2019099524, WO 2019051291, WO 2018218070, WO 2018217651, WO 2018218071, WO 2018218069, WO 2018206539, WO 2018143315, WO 2018140600, WO 2018140599, WO 2018140598, WO 2018140514, WO 2018140513, WO 2018140512, WO 2018119183, WO 2018112420, WO 2018068017, WO 2018064510, WO 2017
- a therapeutic agent that may be combined with a compound of the present invention is an inhibitor of the MAP kinase (MAPK) pathway (or “MAPK inhibitor”).
- MAPK inhibitors include, but are not limited to, one or more MAPK inhibitor described in Cancers (Basel) 2015 Sep; 7(3): 1758–1784.
- the MAPK inhibitor may be selected from one or more of trametinib, binimetinib, selumetinib, cobimetinib, LErafAON (NeoPharm), ISIS 5132; vemurafenib, pimasertib, TAK733, RO4987655 (CH4987655); CI-1040; PD-0325901; CH5126766; MAP855; AZD6244; refametinib (RDEA 119/BAY 86-9766); GDC-0973/XL581; AZD8330 (ARRY-424704/ARRY-704); RO5126766 (Roche, described in PLoS One.2014 Nov 25;9(11)); and GSK1120212 (or JTP-74057, described in Clin Cancer Res.2011 Mar 1;17(5):989-1000).
- the MAPK inhibitor may be PLX8394, LXH254, GDC-5573, or LY3009120.
- an anti-cancer agent is a disrupter or inhibitor of the RAS-RAF-ERK or PI3K-AKT-TOR or PI3K-AKT signaling pathways.
- the PI3K/AKT inhibitor may include, but is not limited to, one or more PI3K/AKT inhibitor described in Cancers (Basel) 2015 Sep; 7(3): 1758–1784.
- the PI3K/AKT inhibitor may be selected from one or more of NVP-BEZ235; BGT226; XL765/SAR245409; SF1126; GDC-0980; PI-103; PF-04691502; PKI-587; GSK2126458.
- an anti-cancer agent is a PD-1 or PD-L1 antagonist.
- additional therapeutic agents include ALK inhibitors, HER2 inhibitors, EGFR inhibitors, IGF-1R inhibitors, MEK inhibitors, PI3K inhibitors, AKT inhibitors, TOR inhibitors, MCL-1 inhibitors, BCL-2 inhibitors, SHP2 inhibitors, proteasome inhibitors, and immune therapies.
- a therapeutic agent may be a pan-RTK inhibitor, such as afatinib.
- IGF-1R inhibitors include linsitinib, or a pharmaceutically acceptable salt thereof.
- EGFR inhibitors include, but are not limited to, small molecule antagonists, antibody inhibitors, or specific antisense nucleotide or siRNA.
- Useful antibody inhibitors of EGFR include cetuximab (Erbitux®), panitumumab (Vectibix®), zalutumumab, nimotuzumab, and matuzumab.
- Further antibody-based EGFR inhibitors include any anti-EGFR antibody or antibody fragment that can partially or completely block EGFR activation by its natural ligand.
- Non-limiting examples of antibody-based EGFR inhibitors include those described in Modjtahedi et al., Br. J. Cancer 1993, 67:247-253; Teramoto et al., Cancer 1996, 77:639-645; Goldstein et al., Clin. Cancer Res.1995, 1:1311-1318; Huang et al., 1999, Cancer Res. 15:59(8):1935-40; and Yang et al., Cancer Res.1999, 59:1236-1243.
- the EGFR inhibitor can be monoclonal antibody Mab E7.6.3 (Yang, 1999 supra), or Mab C225 (ATCC Accession No. HB-8508), or an antibody or antibody fragment having the binding specificity thereof.
- Small molecule antagonists of EGFR include gefitinib (Iressa®), erlotinib (Tarceva®), and lapatinib (TykerB®). See, e.g., Yan et al., Pharmacogenetics and Pharmacogenomics In Oncology Therapeutic Antibody Development, BioTechniques 2005, 39(4):565-8; and Paez et al., EGFR Mutations In Lung Cancer Correlation With Clinical Response To Gefitinib Therapy, Science 2004, 304(5676):1497- 500.
- the EGFR inhibitor is osimertinib (Tagrisso®).
- small molecule EGFR inhibitors include any of the EGFR inhibitors described in the following patent publications, and all pharmaceutically acceptable salts of such EGFR inhibitors: EP 0520722; EP 0566226; WO96/33980; U.S. Pat.
- an EGFR inhibitor is an ERBB inhibitor.
- the ERBB family contains HER1 (EGFR, ERBB1), HER2 (NEU, ERBB2), HER3 (ERBB3), and HER (ERBB4).
- MEK inhibitors include, but are not limited to, pimasertib, selumetinib, cobimetinib (Cotellic®), trametinib (Mekinist®), and binimetinib (Mektovi®).
- a MEK inhibitor targets a MEK mutation that is a Class I MEK1 mutation selected from D67N; P124L; P124S; and L177V.
- the MEK mutation is a Class II MEK1 mutation selected from ⁇ E51-Q58; ⁇ F53-Q58; E203K; L177M; C121S; F53L; K57E; Q56P; and K57N.
- PI3K inhibitors include, but are not limited to, wortmannin; 17-hydroxywortmannin analogs described in WO06/044453; 4-[2-(1H-Indazol-4-yl)-6-[[4-(methylsulfonyl)piperazin-1-yl]methyl]thieno[3,2- d]pyrimidin-4-yl]morpholine (also known as pictilisib or GDC-0941 and described in WO09/036082 and WO09/055730); 2-methyl-2-[4-[3-methyl-2-oxo-8-(quinolin-3-yl)-2,3-dihydroimidazo[4,5-c]quinolin-1- yl]phenyl]propionitrile (also known as BEZ 235 or NVP-BEZ 235, and described in WO06/122806); (S)-l- (4-((2-(2-aminopyrimidin-5-yl)-7-methyl-4-morpholinothieno
- PI3K inhibitors include demethoxyviridin, perifosine, CAL101, PX-866, BEZ235, SF1126, INK1117, IPI-145, BKM120, XL147, XL765, Palomid 529, GSK1059615, ZSTK474, PWT33597, IC87114, TGI 00-115, CAL263, PI-103, GNE-477, CUDC-907, and AEZS-136.
- AKT inhibitors include, but are not limited to, Akt-1-1 (inhibits Aktl) (Barnett et al., Biochem. J.
- mTOR inhibitors include, but are not limited to, ATP-competitive mTORC1/mTORC2 inhibitors, e.g., PI-103, PP242, PP30; Torin 1; FKBP12 enhancers; 4H-1-benzopyran-4-one derivatives; and rapamycin (also known as sirolimus) and derivatives thereof, including: temsirolimus (Torisel®); everolimus (Afinitor®; WO94/09010); ridaforolimus (also known as deforolimus or AP23573); rapalogs, e.g., as disclosed in WO98/02441 and WO01/14387, e.g.
- ATP-competitive mTORC1/mTORC2 inhibitors e.g., PI-103, PP242, PP30; Torin 1; FKBP12 enhancers; 4H-1-benzopyran-4-one derivatives; and rapamycin (also known
- AP23464 and AP23841 40-(2- hydroxyethyl)rapamycin; 40-[3-hydroxy(hydroxymethyl)methylpropanoate]-rapamycin (also known as CC1779); 40-epi-(tetrazolyt)-rapamycin (also called ABT578); 32-deoxorapamycin; 16-pentynyloxy-32(S)- dihydrorapanycin; derivatives disclosed in WO05/005434; derivatives disclosed in U.S. Patent Nos.
- the mTOR inhibitor is a bisteric inhibitor (see, e.g., WO2018204416, WO2019212990 and WO2019212991), such as RMC-5552.
- BRAF inhibitors that may be used in combination with compounds of the invention include, for example, vemurafenib, dabrafenib, and encorafenib.
- a BRAF may comprise a Class 3 BRAF mutation.
- the Class 3 BRAF mutation is selected from one or more of the following amino acid substitutions in human BRAF: D287H; P367R; V459L; G466V; G466E; G466A; S467L; G469E; N581S; N581I; D594N; D594G; D594A; D594H; F595L; G596D; G596R; and A762E.
- MCL-1 inhibitors include, but are not limited to, AMG-176, MIK665, and S63845.
- the myeloid cell leukemia-1 (MCL-1) protein is one of the key anti-apoptotic members of the B-cell lymphoma-2 (BCL- 2) protein family.
- the additional therapeutic agent is a SHP2 inhibitor.
- SHP2 is a non- receptor protein tyrosine phosphatase encoded by the PTPN11 gene that contributes to multiple cellular functions including proliferation, differentiation, cell cycle maintenance and migration.
- SHP2 has two N- terminal Src homology 2 domains (N-SH2 and C-SH2), a catalytic domain (PTP), and a C-terminal tail. The two SH2 domains control the subcellular localization and functional regulation of SHP2.
- the molecule exists in an inactive, self-inhibited conformation stabilized by a binding network involving residues from both the N-SH2 and PTP domains. Stimulation by, for example, cytokines or growth factors acting through receptor tyrosine kinases (RTKs) leads to exposure of the catalytic site resulting in enzymatic activation of SHP2.
- RTKs receptor tyrosine kinases
- SHP2 is involved in signaling through the RAS-mitogen-activated protein kinase (MAPK), the JAK-STAT or the phosphoinositol 3-kinase-AKT pathways.
- Mutations in the PTPN11 gene and subsequently in SHP2 have been identified in several human developmental diseases, such as Noonan Syndrome and Leopard Syndrome, as well as human cancers, such as juvenile myelomonocytic leukemia, neuroblastoma, melanoma, acute myeloid leukemia and cancers of the breast, lung and colon. Some of these mutations destabilize the auto-inhibited conformation of SHP2 and promote autoactivation or enhanced growth factor driven activation of SHP2. SHP2, therefore, represents a highly attractive target for the development of novel therapies for the treatment of various diseases including cancer.
- a SHP2 inhibitor e.g., RMC-4550 or SHP099 in combination with a RAS pathway inhibitor (e.g., a MEK inhibitor) have been shown to inhibit the proliferation of multiple cancer cell lines in vitro (e.g., pancreas, lung, ovarian, and breast cancer).
- a RAS pathway inhibitor e.g., a MEK inhibitor
- combination therapy involving a SHP2 inhibitor with a RAS pathway inhibitor could be a general strategy for preventing tumor resistance in a wide range of malignancies.
- Non-limiting examples of such SHP2 inhibitors include: Chen et al. Mol Pharmacol.2006, 70, 562; Sarver et al., J. Med. Chem.2017, 62, 1793; Xie et al., J. Med.
- a SHP2 inhibitor binds in the active site.
- a SHP2 inhibitor is a mixed-type irreversible inhibitor.
- a SHP2 inhibitor binds an allosteric site e.g., a non-covalent allosteric inhibitor.
- a SHP2 inhibitor is a covalent SHP2 inhibitor, such as an inhibitor that targets the cysteine residue (C333) that lies outside the phosphatase’s active site.
- a SHP2 inhibitor is a reversible inhibitor.
- a SHP2 inhibitor is an irreversible inhibitor.
- the SHP2 inhibitor is SHP099.
- the SHP2 inhibitor is TNO155. In some embodiments, the SHP2 inhibitor is RMC-4550. In some embodiments, the SHP2 inhibitor is RMC-4630. In some embodiments, the SHP2 inhibitor is JAB- 3068. In some embodiments, the SHP2 inhibitor is RLY-1971.
- the additional therapeutic agent is selected from the group consisting of a MEK inhibitor, a HER2 inhibitor, a SHP2 inhibitor, a CDK4/6 inhibitor, an mTOR inhibitor, a SOS1 inhibitor, and a PD-L1 inhibitor. In some embodiments, the additional therapeutic agent is selected from the group consisting of a MEK inhibitor, a SHP2 inhibitor, and a PD-L1 inhibitor.
- a Ras inhibitor of the present invention is used in combination with a MEK inhibitor and a SOS1 inhibitor. In some embodiments, a Ras inhibitor of the present invention is used in combination with a PDL-1 inhibitor and a SOS1 inhibitor. In some embodiments, a Ras inhibitor of the present invention is used in combination with a PDL-1 inhibitor and a SHP2 inhibitor. In some embodiments, a Ras inhibitor of the present invention is used in combination with a MEK inhibitor and a SHP2 inhibitor.
- the cancer is colorectal cancer and the treatment comprises administration of a Ras inhibitor of the present invention in combination with a second or third therapeutic agent.
- Proteasome inhibitors include, but are not limited to, carfilzomib (Kyprolis®), bortezomib (Velcade®), and oprozomib.
- Immune therapies include, but are not limited to, monoclonal antibodies, immunomodulatory imides (IMiDs), GITR agonists, genetically engineered T-cells (e.g., CAR-T cells), bispecific antibodies (e.g., BiTEs), and anti-PD-1, anti-PDL-1, anti-CTLA4, anti-LAGl, and anti-OX40 agents).
- Immunomodulatory agents are a class of immunomodulatory drugs (drugs that adjust immune responses) containing an imide group.
- the IMiD class includes thalidomide and its analogues (lenalidomide, pomalidomide, and apremilast).
- Exemplary anti-PD-1 antibodies and methods for their use are described by Goldberg et al., Blood 2007, 110(1):186-192; Thompson et al., Clin. Cancer Res.2007, 13(6):1757-1761; and WO06/121168 A1), as well as described elsewhere herein.
- GITR agonists include, but are not limited to, GITR fusion proteins and anti-GITR antibodies (e.g., bivalent anti-GITR antibodies), such as, a GITR fusion protein described in U.S. Pat. No.6,111,090, , U.S. Pat. No.8,586,023, WO2010/003118 and WO2011/090754; or an anti-GITR antibody described, e.g., in U.S. Pat. No.7,025,962, EP 1947183, U.S. Pat. No.7,812,135, U.S. Pat. No.8,388,967, U.S. Pat. No.8,591,886, U.S. Pat.
- Anti-angiogenic agents are inclusive of, but not limited to, in vitro synthetically prepared chemical compositions, antibodies, antigen binding regions, radionuclides, and combinations and conjugates thereof.
- An anti-angiogenic agent can be an agonist, antagonist, allosteric modulator, toxin or, more generally, may act to inhibit or stimulate its target (e.g., receptor or enzyme activation or inhibition), and thereby promote cell death or arrest cell growth.
- the one or more additional therapies include an anti-angiogenic agent.
- Anti-angiogenic agents can be MMP-2 (matrix-metalloproteinase 2) inhibitors, MMP-9 (matrix- metalloprotienase 9) inhibitors, and COX-II (cyclooxygenase 11) inhibitors.
- Non-limiting examples of anti- angiogenic agents include rapamycin, temsirolimus (CCI-779), everolimus (RAD001), sorafenib, sunitinib, and bevacizumab.
- Examples of useful COX-II inhibitors include alecoxib, valdecoxib, and rofecoxib.
- WO96/33172 examples include WO96/27583, WO98/07697, WO98/03516, WO98/34918, WO98/34915, WO98/33768, WO98/30566, WO90/05719, WO99/52910, WO99/52889, WO99/29667, WO99007675, EP0606046, EP0780386, EP1786785, EP1181017, EP0818442, EP1004578, and US20090012085, and U.S. Patent Nos.5,863,949 and 5,861,510.
- MMP-2 and MMP-9 inhibitors are those that have little or no activity inhibiting MMP- 1. More preferred, are those that selectively inhibit MMP-2 or AMP-9 relative to the other matrix- metalloproteinases (i.e., MAP-1, MMP-3, MMP-4, MMP-5, MMP-6, MMP- 7, MMP- 8, MMP-10, MMP-11, MMP-12, and MMP-13).
- MMP inhibitors are AG-3340, RO 32-3555, and RS 13-0830.
- anti-angiogenic agents include KDR (kinase domain receptor) inhibitory agents (e.g., antibodies and antigen binding regions that specifically bind to the kinase domain receptor), anti-VEGF agents (e.g., antibodies or antigen binding regions that specifically bind VEGF (e.g., bevacizumab), or soluble VEGF receptors or a ligand binding region thereof) such as VEGF-TRAPTM, and anti-VEGF receptor agents (e.g., antibodies or antigen binding regions that specifically bind thereto), EGFR inhibitory agents (e.g., antibodies or antigen binding regions that specifically bind thereto) such as Vectibix® (panitumumab), erlotinib (Tarceva®), anti-Angl and anti-Ang2 agents (e.g., antibodies or antigen binding regions specifically binding thereto or to their receptors, e.g., Tie2/Tek), and anti-Tie2 kinase inhibitory agents (e.g.,
- anti-angiogenic agents include Campath, IL-8, B-FGF, Tek antagonists (US2003/0162712; US6,413,932), anti-TWEAK agents (e.g., specifically binding antibodies or antigen binding regions, or soluble TWEAK receptor antagonists; see US6,727,225), ADAM distintegrin domain to antagonize the binding of integrin to its ligands (US 2002/0042368), specifically binding anti-eph receptor or anti-ephrin antibodies or antigen binding regions (U.S.
- anti-PDGF-BB antagonists e.g., specifically binding antibodies or antigen binding regions
- PDGFR kinase inhibitory agents e.g., antibodies or antigen binding regions that specifically bind thereto.
- Additional anti-angiogenic agents include: SD-7784 (Pfizer, USA); cilengitide (Merck KGaA, Germany, EPO 0770622); pegaptanib octasodium, (Gilead Sciences, USA); Alphastatin, (BioActa, UK); M-PGA, (Celgene, USA, US 5712291); ilomastat, (Arriva, USA, US5892112); emaxanib, (Pfizer, USA, US 5792783); vatalanib, (Novartis, Switzerland); 2-methoxyestradiol (EntreMed, USA); TLC ELL-12 (Elan, Ireland); anecortave acetate (Alcon, USA); alpha-D148 Mab (Amgen, USA); CEP-7055 (Cephalon, USA); anti-Vn Mab (Crucell, Netherlands), DACantiangiogenic (ConjuChem, Canada); Angiocidin (InKine Pharmaceutical, USA);
- agents e.g., antibodies, antigen binding regions, or soluble receptors
- HGF hepatocyte growth factor
- Scatter Factor hepatocyte growth factor
- Another example of a therapeutic agent that may be used in combination with compounds of the invention is an autophagy inhibitor.
- Autophagy inhibitors include, but are not limited to chloroquine, 3- methyladenine, hydroxychloroquine (PlaquenilTM), bafilomycin A1, 5-amino-4-imidazole carboxamide riboside (AICAR), okadaic acid, autophagy-suppressive algal toxins which inhibit protein phosphatases of type 2A or type 1, analogues of cAMP, and drugs which elevate cAMP levels such as adenosine, LY204002, N6-mercaptopurine riboside, and vinblastine.
- antisense or siRNA that inhibits expression of proteins including but not limited to ATG5 (which are implicated in autophagy), may also be used.
- the one or more additional therapies include an autophagy inhibitor.
- Another example of a therapeutic agent that may be used in combination with compounds of the invention is an anti-neoplastic agent.
- the one or more additional therapies include an anti-neoplastic agent.
- Non-limiting examples of anti-neoplastic agents include acemannan, aclarubicin, aldesleukin, alemtuzumab, alitretinoin, altretamine, amifostine, aminolevulinic acid, amrubicin, amsacrine, anagrelide, anastrozole, ancer, ancestim, arglabin, arsenic trioxide, BAM-002 (Novelos), bexarotene, bicalutamide, broxuridine, capecitabine, celmoleukin, cetrorelix, cladribine, clotrimazole, cytarabine ocfosfate, DA 3030 (Dong-A), daclizumab, denileukin diftitox, deslorelin, dexrazoxane, dilazep, docetaxel, docosanol, doxercalciferol, doxifluridine
- therapeutic agents include ipilimumab (Yervoy®); tremelimumab; galiximab; nivolumab, also known as BMS- 936558 (Opdivo®); pembrolizumab (Keytruda®); avelumab (Bavencio®); AMP224; BMS-936559; MPDL3280A, also known as RG7446; MEDI-570; AMG557; MGA271; IMP321; BMS-663513; PF- 05082566; CDX-1127; anti-OX40 (Providence Health Services); huMAbOX40L; atacicept; CP-870893; lucatumumab; dacetuzumab; muromonab-CD3; ipilumumab; MEDI4736 (Imfinzi®); MSB0010718C; AMP 224;
- the compounds described herein can be used in combination with the agents disclosed herein or other suitable agents, depending on the condition being treated. Hence, in some embodiments the one or more compounds of the disclosure will be co-administered with other therapies as described herein.
- the compounds described herein may be administered with the second agent simultaneously or separately.
- This administration in combination can include simultaneous administration of the two agents in the same dosage form, simultaneous administration in separate dosage forms, and separate administration. That is, a compound described herein and any of the agents described herein can be formulated together in the same dosage form and administered simultaneously. Alternatively, a compound of the invention and any of the therapies described herein can be simultaneously administered, wherein both the agents are present in separate formulations.
- a compound of the present disclosure can be administered and followed by any of the therapies described herein, or vice versa.
- a compound of the invention and any of the therapies described herein are administered a few minutes apart, or a few hours apart, or a few days apart.
- the first therapy e.g., a compound of the invention
- one or more additional therapies are administered simultaneously or sequentially, in either order.
- the first therapeutic agent may be administered immediately, up to 1 hour, up to 2 hours, up to 3 hours, up to 4 hours, up to 5 hours, up to 6 hours, up to 7 hours, up to, 8 hours, up to 9 hours, up to 10 hours, up to 11 hours, up to 12 hours, up to 13 hours, 14 hours, up to hours 16, up to 17 hours, up 18 hours, up to 19 hours up to 20 hours, up to 21 hours, up to 22 hours, up to 23 hours, up to 24 hours, or up to 1-7, 1-14, 1-21 or 1-30 days before or after the one or more additional therapies.
- kits including (a) a pharmaceutical composition including an agent (e.g., a compound of the invention) described herein, and (b) a package insert with instructions to perform any of the methods described herein.
- the kit includes (a) a pharmaceutical composition including an agent (e.g., a compound of the invention) described herein, (b) one or more additional therapies (e.g., non-drug treatment or therapeutic agent), and (c) a package insert with instructions to perform any of the methods described herein.
- additional therapies e.g., non-drug treatment or therapeutic agent
- the invention further relates to combining separate pharmaceutical compositions in kit form.
- the kit may comprise two separate pharmaceutical compositions: a compound of the present invention, and one or more additional therapies.
- the kit may comprise a container for containing the separate compositions such as a divided bottle or a divided foil packet. Additional examples of containers include syringes, boxes, and bags.
- the kit may comprise directions for the use of the separate components.
- the kit form is particularly advantageous when the separate components are preferably administered in different dosage forms (e.g., oral and parenteral), are administered at different dosage intervals, or when titration of the individual components of the combination is desired by the prescribing health care professional.
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 10- membered heteroarylene;
- linker is the structure of Formula II: A 1 -(B 1 )f-(C 1 )g-(B 2 )h-(D 1 )-(B 3 )i-(C 2 )j-(B 4 )k–A 2 Formula II where A 1 is a bond between the linker and B; A 2 is a bond between W and the linker; B 1 , B 2 , B 3 , and B 4 each, independently, is selected from optionally substituted C 1 -C 2 alkylene, optionally substituted C 1 -C 3 heteroalkylene, O, S, and NR N ; R N is hydrogen, optionally substituted C 1 -C 4 alkyl, optionally substituted C 2 -C 4 alkenyl, optionally substituted C 2 -C 4 alkynyl, optionally substituted 3 to 14-membered heterocycloalkyl, optionally substituted 6
- W has the structure of Formula IIIb: Formula IIb wherein X 1 is O or S; X 2 is absent or NR 19 ; R 15 , R 16 , R 17 , and R 18 are, independently, hydrogen or optionally substituted C 1 -C 6 alkyl; and R 19 is hydrogen, C(O)(optionally substituted C 1 -C 6 alkyl), optionally substituted C 1 -C 6 alkyl, optionally substituted 6 to 10-membered aryl, optionally substituted 3 to 14-membered heterocycloalkyl, or optionally substituted 5 to 10-membered heteroaryl.
- A is -N(H or CH 3 )C(O)-(CH 2 )- where the amino nitrogen is bound to the carbon atom of -CH(R 10 )-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6- membered heteroarylene;
- M has the structure of Formula Vc: Formula Vc wherein A is optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene; X 1 is optionally substituted C 1 -C 2 alkylene, NR, O, or S(O)n; X 2 is O or NH; n is 0, 1, or 2; R is hydrogen, cyano, optionally substituted C 1 -C 4 alkyl, optionally
- X e is N and X f is CH. In some embodiments, X e is CH and X f is N.
- M has the structure of Formula Vd: Formula Vd wherein A optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6- membered heterocycloalkylene, optionally substituted 6-membered arylene, or optionally substituted 5 to 6-membered heteroarylene; B is -CH(R 9 )- where the carbon is bound to the carbonyl carbon of -NHC(O)-, optionally substituted 3 to 6-membered cycloalkylene, optionally substituted 3 to 6-membered heterocycloalkylene, optionally substituted 6-membered arylene, or 5 to 6-membered heteroarylene; L is absent or a linker; W is a cross-linking group comprising a
- linker has the structure of Formula II: A 1 -(B 1 )f-(C 1 )g-(B 2 )h-(D 1 )-(B 3 )i-(C 2 )j-(B 4 )k–A 2 Formula II where A 1 is a bond between the linker and B; A 2 is a bond between P and the linker; B 1 , B 2 , B 3 , and B 4 each, independently, is selected from optionally substituted C 1 -C 2 alkylene, optionally substituted C 1 -C 3 heteroalkylene, O, S, and NR N ; R N is hydrogen, optionally substituted C 1 -C 4 alkyl, optionally substituted C 2 -C 4 alkenyl, optionally substituted C 2 -C 4 alkynyl, optionally substituted 3 to 14-membered heterocycloalkyl, optionally substituted 6 to 10-
- a method of treating cancer in a subject in need thereof comprising administering to the subject a therapeutically effective amount of a compound, or a pharmaceutically acceptable salt thereof, of any one of paragraphs [1] to [78] or a pharmaceutical composition of paragraph [79].
- the cancer is pancreatic cancer, non-small cell lung cancer, colorectal cancer or endometrial cancer.
- the method of paragraph [88] or [89], wherein the cancer comprises a Ras mutation.
- the Ras mutation is K-Ras G12D or K-Ras G13D.
- [92] A method of treating a Ras protein-related disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of a compound, or a pharmaceutically acceptable salt thereof, of any one of paragraphs [1] to [78] or a pharmaceutical composition of paragraph [79].
- [93] A method of inhibiting a Ras protein in a cell, the method comprising contacting the cell with an effective amount of a compound, or a pharmaceutically acceptable salt thereof, of any one of paragraphs [1] to [78] or a pharmaceutical composition of paragraph [79].
- the method of paragraph [92] or [93], wherein the Ras protein is K-Ras G12D or K-Ras G13D.
- the additional anticancer therapy is an EGFR inhibitor, a second Ras inhibitor, a SHP2 inhibitor, a SOS1 inhibitor, a Raf inhibitor, a MEK inhibitor, an ERK inhibitor, a PI3K inhibitor, a PTEN inhibitor, an AKT inhibitor, an mTORC1 inhibitor, a BRAF inhibitor, a PD-L1 inhibitor, a PD-1 inhibitor, a CDK4/6 inhibitor, a HER2 inhibitor, or a combination thereof.
- the additional anticancer therapy is a SHP2 inhibitor.
- Step 2 Synthesis of 1-(5-bromo-1H-indol-3-yl)-3-((tert-butyldiphenylsilyl)oxy)-2,2-dimethylpropan- 1-one
- 1-(5-bromo-1H-indol-3-yl)-3-((tert-butyldiphenylsilyl)oxy)-2,2-dimethylpropan-1- one 50 g, 93.6 mmol
- THF 100 mL
- N2 LiBH4 (6.1 g, 281 mmol).
- Step 3 Synthesis of 5-bromo-3-(3-((tert-butyldiphenylsilyl)oxy)-2,2-dimethylpropyl)-2-iodo-1H- indole
- 1-(5-bromo-1H-indol-3-yl)-3-((tert-butyldiphenylsilyl)oxy)-2,2-dimethylpropan-1- one 1.5 g, 2.9 mmol
- I2 731 mg, 2.9 mmol
- AgOTf 888 mg, 3.5 mmol
- Step 4 Synthesis of (1S)-1-(3-bromopyridin-2-yl)ethanol To a stirred mixture of HCOOH (66.3 g, 1.44 mol) in Et 3 N (1002 mL, 7.2 mol) at 0 °C under an atmosphere of Ar was added (4S,5S)-2-chloro-2-methyl-1-(4-methylbenzenesulfonyl)-4,5-diphenyl-1,3- diaza-2-ruthenacyclopentane cymene (3.9 g, 6.0 mmol) portion-wise.
- Step 6 Synthesis of 2-[(1S)-1-methoxyethyl]-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)pyridine
- 3-bromo-2-[(1S)-1-methoxyethyl]pyridine 90 g, 417 mmol
- toluene 900 mL
- bis(pinacolato)diboron 127 g, 500 mmol
- KOAc 81.8 g, 833 mmol
- Pd(dppf)Cl2 30.5 g, 41.7 mmol
- Step 7 Synthesis of 5-bromo-3-[3-[(tert-butyldiphenylsilyl)oxy]-2,2-dimethylpropyl]-2-[2-[(1S)-1- methoxyethyl]pyridin-3-yl]-1H-indole
- 5-bromo-3-[3-[(tert-butyldiphenylsilyl)oxy]-2,2-dimethylpropyl]-2-iodo-1H- indole 140 g, 217 mmol
- 2-[(1S)-1-methoxyethyl]-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)pyridine 100 g, 380 mmol
- 1,4-dioxane 1.14
- Pd(dppf)Cl2 15.
- Step 1 Synthesis of 5-[2-[(1S)-1-methoxyethyl]pyridin-3-yl]-2,2-dimethyl-5-oxopentanoic acid To a mixture of i-PrMgCl (2M in in THF, 0.5 L) at -10 °C under an atmosphere of N2 was added n- BuLi, 2.5 M in hexane (333 mL, 833 mmol) dropwise over 15 min.
- Step 3 Synthesis of ethyl 3-(5-bromo-1-ethyl-2-[2-[(1S)-1-methoxyethyl]pyridin-3-yl]indol-3-yl)- 2,2-dimethylpropanoate
- Step 4 Synthesis of 3-(5-bromo-1-ethyl-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-3-yl)-2,2- dimethylpropan-1-ol
- 3-(5-bromo-1-ethyl-2-[2-[(1S)-1-methoxyethyl]pyridin-3-yl]indol-3-yl)-2,2- dimethylpropanoate (160 g, 328 mmol) in THF (1.6 L) at 0 °C under an atmosphere of N2 was added LiBH4 (28.6 g, 1.3 mol).
- Step 2 Synthesis of (S)-methyl 2-(tert-butoxycarbonylamino)-3-(3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)-5-(triisopropylsilyloxy)phenyl)-propanoate
- a mixture of (S)-methyl 2-(tert-butoxycarbonylamino)-3-(3-(triisopropylsilyloxy)phenyl)-propanoate 7.5 g, 16.6 mmol
- PinB2 6.3 g, 24.9 mmol
- [Ir(OMe)(COD)]2 1.1 g, 1.7 mmol
- 4-tert-butyl-2-(4-tert- butyl-2-pyridyl)pyridine 1.3 g, 5.0 mmol
- Step 3 Synthesis of (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)-5-((triisopropylsilyl)oxy)phenyl)propanoic acid
- tert-butyl methyl-L-valinate (3.8g, 20.4 mmol) in DMF (10 mL) was added. The mixture was stirred at room temperature for 3 h, then diluted with DCM (40 mL) and H 2 O (30 mL). The aqueous and organic layers were separated, and the organic layer was washed with H 2 O (3 x 30 mL), brine (30 mL), dried over anhydrous Na 2 SO 4 and filtered.
- Step 2 Synthesis of (S)-tert-butyl 3-methyl-2-((S)-N-methylpyrrolidine-3-carboxamido)butanoate
- Step 1 Synthesis of methyl (3S)-1-[(2S)-2-[(tert-butoxycarbonyl)amino]-3-[3-[1-ethyl-3-(3- hydroxy-2,2-dimethylpropyl)-2-[2-[(1S)-1-methoxyethyl]pyridin-3-yl]indol-5-yl]-5- [(triisopropylsilyl)oxy]phenyl]propanoyl]-1,2-diazinane-3-carboxylate To a stirred mixture of 3-(5-bromo-1-ethyl-2-[2-[(1S)-1-methoxyethyl]pyridin-3-yl]indol-3-yl)-2,2- dimethylpropan-1-ol (30 g, 67 mmol) and methyl (3S)-1-[(2S)-2-[(tert-butoxycarbonyl)amino]-3-[3-(4,
- Step 3 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)-10,10- dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a stirred mixture of (3S)-1-[(2S)-2-[(tert-butoxycarbonyl)amino]-3-[3-[1
- Step 1 Synthesis of 3-(5-bromo-1H-indol-3-yl)-2,2-dimethylpropan-1-ol This reaction was undertaken on five batches in parallel on the scale illustrated below.
- the resulting mixture was heated to 50 °C and stirred for 16 h, then the mixture was concentrated under reduced pressure.
- Step 2 Synthesis of 3-(5-bromo-1H-indol-3-yl)-2,2-dimethylpropyl acetate This reaction was undertaken on two batches in parallel in accordance with the procedure below. To a stirred mixture of 3-(5-bromo-1H-indol-3-yl)-2,2-dimethylpropan-1-ol (135 g, 478 mmol) and Et 3 N (200 mL, 1.44 mol) in DCM (1.3 L) at 0 °C under an atmosphere of N2 was added Ac2O (73.3 g, 718 mmol) and DMAP (4.68 g, 38.3 mmol) in portions.
- Step 3 Synthesis of methyl (2S)-3-(3-[3-[3-(acetyloxy)-2,2-dimethylpropyl]-1H-indol-5-yl]-5- [(triisopropylsilyl)oxy]phenyl)-2-[(tert-butoxycarbonyl)amino]propanoate This reaction was undertaken on four batches in parallel in accordance with the procedure below.
- Step 4 Synthesis of methyl (2S)-3-(3-[3-[3-(acetyloxy)-2,2-dimethylpropyl]-2-iodo-1H-indol-5-yl]- 5-[(triisopropylsilyl)oxy]phenyl)-2-[(tert-butoxycarbonyl)amino]propanoate This reaction was undertaken on three batches in parallel in accordance with the procedure below.
- Step 5 Synthesis of methyl (2S)-2-[(tert-butoxycarbonyl)amino]-3-[3-[3-(3-hydroxy-2,2- dimethylpropyl)-2-iodo-1H-indol-5-yl]-5-[(triisopropylsilyl)oxy]phenyl]propanoate This reaction was undertaken on three batches in parallel in accordance with the procedure below.
- Step 9 Synthesis of tert-butyl ((6 3 S,4S)-1 2 -iodo-10,10-dimethyl-5,7-dioxo-2 5 - ((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 -H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)carbamate This reaction was undertaken on two batches in parallel in accordance with the procedure below.
- Step 2 Synthesis of give tert-butyl ((6 3 S,4S)-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl- 5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 -H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina- 2(1,3)-benzenacycloundecaphane-4-yl)carbamate
- Step 3 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10- dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 -H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate A mixture of tert-butyl ((6 3 S,4S)-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5
- Step 4 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)carbamate A mixture of tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5,7- di
- Step 2 Synthesis of methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)phenyl)propanoate
- methyl (2S)-3-(3-bromophenyl)-2-[(tert-butoxycarbonyl)amino]propanoate 108 g, 301.5 mmol
- bis(pinacolato)diboron 99.53 g, 391.93 mmol
- 1,4-dioxane 3.2 L
- KOAc 73.97 g, 753.70 mmol
- Pd(dppf)Cl2 22.06 g, 30.15 mmol
- Step 3 Synthesis of methyl (S)-3-(3-(3-(3-(3-acetoxy-2,2-dimethylpropyl)-1H-indol-5-yl)phenyl)-2- ((tert-butoxycarbonyl)amino)propanoate
- (2S)-2-[(tert-butoxycarbonyl)amino]-3-[3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)phenyl]propanoate 94 g, 231.9 mmol
- 3-(5-bromo-1H-indol-3-yl)-2,2- dimethylpropyl acetate (75.19 g, 231.93 mmol) in 1,4-dioxane (1.5 L) and H 2 O (300 mL) was added K 2 CO 3 (64.11 g, 463.85 mmol) and Pd(DtBPF)Cl2 (15.12 g
- Step 4 Synthesis of methyl (S)-3-(3-(3-(3-acetoxy-2,2-dimethylpropyl)-2-iodo-1H-indol-5- yl)phenyl)-2-((tert-butoxycarbonyl)amino)propanoate
- methyl (2S)-3-(3-[3-[3-(acetyloxy)-2,2-dimethylpropyl]-1H-indol-5-yl]phenyl)-2- [(tert-butoxycarbonyl)amino]propanoate (95.0 g, 181.8 mmol) and iodine (36.91 g, 145.41 mmol) in THF (1 L) at -10 °C was added AgOTf (70.0 g, 272.7 mmol) and NaHCO 3 (22.9 g, 272.65 mmol).
- Step 5 Synthesis of (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(3-(3-hydroxy-2,2-dimethylpropyl)-2- iodo-1H-indol-5-yl)phenyl)propanoic acid
- methyl (2S)-3-(3-[3-[3-(acetyloxy)-2,2-dimethylpropyl]-2-iodo-1H-indol-5- yl]phenyl)-2-[(tert-butoxycarbonyl)amino]propanoate 60 g, 92.5 mmol
- THF 600 mL
- Step 6 Synthesis of methyl (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(3-(3-hydroxy-2,2- dimethylpropyl)-2-iodo-1H-indol-5-yl)phenyl)propanoyl)hexahydropyridazine-3-carboxylate
- (2S)-2-[(tert-butoxycarbonyl)amino]-3-[3-[3-(3-hydroxy-2,2-dimethylpropyl)-2- iodo-1H-indol-5-yl]phenyl]propanoic acid (30 g, 50.6 mmol) and methyl (3S)-1,2-diazinane-3-carboxylate (10.9 g, 75.9 mmol) in DCM (400 mL) was added NMM (40.97 g, 405.08 mmol), HOBT (2.05 g, 15.
- Step 7 Synthesis of (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(3-(3-hydroxy-2,2- dimethylpropyl)-2-iodo-1H-indol-5-yl)phenyl)propanoyl)hexahydropyridazine-3-carboxylic acid
- Step 8 Synthesis of tert-butyl ((6 3 S,4S)-1 2 -iodo-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 - hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate
- Step 9 Synthesis of tert-butyl ((6 3 S,4S)-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5,7- dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)carbamate
- Step 10 Synthesis of tert-butyl ((6 3 S,4S)-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5,7- dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)carbamate
- Step 11 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)carbamate
- tert-butyl ((6 3 S,4S)-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10 10-dimethyl-5,7-dioxo- 6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,
- Step 12 Synthesis of (6 3 S,4S)-4-amino-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10- dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-5,7-dione
- tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl- 5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazin
- Step 1 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl) pyridin- 3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina- 2(1,3)-benzenacycloundecaphane-4-yl) carbamate
- Step 1 Synthesis of tert-butyl ((6 3 S,4S)-1 2 -(2-((S)-1-methoxyethyl) pyridin-3-yl)-10,10-dimethyl- 5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1
- Step 2 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl) pyridin-3-yl)-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl) carbamate
- tert-butyl ((6 3 S,4S)-1 2 -(2-((S)-1-methoxyethyl) pyridin-3-yl)-10 10-dimethyl-5,7- dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-o
- Step 2 Synthesis of tert-butyl ((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-25-((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)carbamate To a mixture of (6 3 S,4S)-4-amino-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl-2 5 - ((tri
- Step 3 Synthesis of (2S)-N-((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl- 5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina- 2(1,3)-benzenacycloundecaphane-4-yl)-3-methyl-2-(methylamino)butanamide
- Step 2 Synthesis of N-(N-(tert-butoxycarbonyl)-N-methylglycyl)-N-methyl-L-valine
- THF 37.0 mL
- LiOH ⁇ H 2 O 1.96 g, 46.71 mmol
- H 2 O 47.0 mL
- Step 3 Synthesis of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-2-oxoethyl)(methyl)carbamate To a solution of (6 3 S,4S)-4-amino-1 1 -ethyl-1 2 -(4-(methoxymethyl)
- Step 4 Synthesis of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4- (methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)- indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-2-oxoethyl)(methyl)carbamate To a solution of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl
- Step 5 Synthesis of (2S)-N-((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)-3-methyl-2-(N-methyl-2-(methylamino)acetamido)butanamide To a solution of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin- 3-yl)-10,10-dimethyl-5,7-dio
- Step 2 Synthesis of N-((S)-1-((benzyloxy)carbonyl)pyrrolidine-3-carbonyl)-N-methyl-L-valine
- benzyl (S)-3-(((S)-1-methoxy-3-methyl-1-oxobutan-2- yl)(methyl)carbamoyl)pyrrolidine-1-carboxylate (1.125 g, 2.99 mmol) in MeOH (10.0 mL) was added a solution of LiOH (180.0 mg, 7.52 mmol) in H 2 O (2 mL).
- Step 3 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)carbamate To a solution of tert-butyl ((6 3 S,4S)-1 1 -ethyl-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10-dimethyl- 5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5
- Step 4 Synthesis of (6 3 S,4S)-4-amino-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-5,7-dione
- tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola
- Step 5 Synthesis of benzyl (3S)-3-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4- (methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)- indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)carbamoyl)pyrrolidine-1-carboxylate To a solution of N-((S)-1-((benzyloxy)carbonyl)pyrrolidine-3-carbonyl)-N-methyl-L-valine (676.4 mg, 6.31 mmol) in MeCN
- reaction mixture was stirred for 5 min followed by the addition of (6 3 S,4S)-4-amino-1 1 -ethyl-2 5 -hydroxy-1 2 -(4- (methoxymethyl)pyridin-3-yl)-10,10-dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-5,7-dione (395.0 mg, 0.631 mmol).
- the reaction mixture was warmed to room temperature and stirred for 20 h.
- Step 6 Synthesis of (3S)-N-((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin- 3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina- 2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2-yl)-N-methylpyrrolidine-3- carboxamide To a solution of benzyl (3S)-3-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4- (methoxymethyl)pyridin-3-yl)-10
- Step 2 Synthesis of tert-butyl (3-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-3-oxopropyl)carbamate To a mixture of (2S)-N-((6 3 S,4S)-1 1 -ethyl-1 2 -(2-(methoxymethyl)pyridin
- Step 3 Synthesis of (2S)-2-(3-amino-N-methylpropanamido)-N-((6 3 S,4S)-1 1 -ethyl-1 2 -(2- (methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 - hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)-3- methylbutanamide To a solution of tert-butyl (3-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-(methoxymethyl)pyridin-3-yl)-10,10- dimethyl-5,7
- Step 2 Synthesis of (6 3 S,4S)-4-amino-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)- 10,10-dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-5,7-dione To a stirred solution of tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)pyridin- 3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro
- Step 3 Synthesis of benzyl ((1S)-1-cyclopentyl-2-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-2-oxoethyl)(methyl)carbamate To a stirred solution of (6 3 S,4S)-4-amino-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)pyridin-3- yl)-10,10-d
- Step 4 Synthesis of (2S)-2-cyclopentyl-N-((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)-2-(methylamino)acetamide To a stirred solution of benzyl ((1S)-1-cyclopentyl-2-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-d
- Step 2 Synthesis of N-(3-((tert-butoxycarbonyl)(methyl)amino)propanoyl)-N-methyl-L-valine
- N-(3-((tert-butoxycarbonyl)(methyl)amino)propanoyl)-N-methyl-L-valinate 1.0 g, 3.03 mmol
- H 2 O 4.0 mL
- LiOH 0.14 g, 6.05 mmol
- Step 3 Synthesis of tert-butyl (3-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4- (methoxymethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)- indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-3-oxopropyl)(methyl)carbamate To a solution of (6 3 S,4S)-4-amino-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin-3-yl)-10,
- Step 4 Synthesis of (2S)-N-((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)-3-methyl-2-(N-methyl-3-(methylamino)propanamido)butanamide To a solution of tert-butyl (3-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(4-(methoxymethyl)pyridin- 3-yl)-10,10-dimethyl-5,7-dio
- Step 2 Synthesis of (2S)-2-cyclopentyl-N-((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)-2-(N-methyl-2- (methylamino)acetamido)acetamide To a mixture of tert-butyl (2-(((1S)-1-cyclopentyl-2-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyeth
- Step 2 Synthesis of benzyl ((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)- 6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)carbamate To a solution of (6 3 S,4S)
- Step 4 Synthesis of tert-butyl (2R,5R)-2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro- 1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1- oxobutan-2-yl)(methyl)carbamoyl)-5-methylpyrrolidine-1-carboxylate To a solution of (2S)-N-((6 3 S,4S)-1 1 -eth
- Step 5 Synthesis of (2R,5R)-N-((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2-yl)-N,5- dimethylpyrrolidine-2-carboxamide To a solution of tert-butyl (2R,5R)-2-(((2S)-1-(((6 3 S,4S)-1 1 1
- Step 2 Synthesis of tert-butyl (2R)-2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro- 1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1- oxobutan-2-yl)(methyl)carbamoyl)pyrrolidine-1-carboxylate To a solution of (2S)-N-((6 3 S,4S)-1 1 -ethyl-1 2 -
- Step 3 Synthesis of (2R)-N-((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2-yl)-i- methylpyrrolidine-2-carboxamide To a solution of tert-butyl (2R)-2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2
- Step 2 Synthesis of (2R)-N-((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2-yl)-N- methylazetidine-2-carboxamide To a mixture of tert-butyl (2R)-2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2
- Step 2 Synthesis of tert-butyl ((6 3 S,4S)-25-(benzyloxy)-1 2 -(5-(sec- butyl(methyl)carbamoyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa- 1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a solution of 5-bromo-N-(sec-butyl)-N-methylnicotinamide (800.0 mg, 2.95 mmol) and K3PO3 (1.565 g, 7.376 mmol) in 1,
- Step 3 Synthesis of tert-butyl ((6 3 S,4S)-2 5 -(benzyloxy)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin- 3-yl)-1 1 -ethyl-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a solution of tert-butyl ((6 3 S,4S)-25-(benzyloxy)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3- yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3
- Step 4 Synthesis of tert-butyl ((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3-yl)-1 1 -ethyl- 2 5 -hydroxy-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a solution of tert-butyl ((6 3 S,4S)-2 5 -(benzyloxy)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3- yl)-1 1 -ethyl-10,10-dimethyl-5,7-dioxo-6 1 ,
- Step 5 Synthesis of tert-butyl ((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3-yl)-1 1 -ethyl- 10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a solution of tert-butyl ((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3-yl)-1 1 -ethyl-2 5 - hydroxy-10,10-dimethyl-5,7-di
- Step 6 Synthesis of 5-((6 3 S,4S)-4-amino-1 1 -ethyl-10,10-dimethyl-5,7-dioxo-2 5 - ((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-1 2 -yl)-N-(sec-butyl)-N-methylnicotinamide
- tert-butyl ((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3-yl)-1 1 -ethyl-10,10- dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)
- Step 7 Synthesis of benzyl ((2S)-1-(((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3-yl)-1 1 - ethyl-10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)- indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)carbamate To a solution of 5-((6 3 S,4S)-4-amino-1 1 -ethyl-10,10-dimethyl-5,7-dioxo-2 5 -((tri
- Step 8 Synthesis of N-(sec-butyl)-5-((6 3 S,4S)-1 1 -ethyl-10,10-dimethyl-4-((S)-3-methyl-2- (methylamino)butanamido)-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa- 1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-1 2 -yl)-N-methylnicotinamide To a solution of benzyl ((2S)-1-(((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3-yl)-1 1 -ethyl- 10,10-dimethyl-5,7
- Step 9 Synthesis of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3- yl)-1 1 -ethyl-10,10-dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa- 1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-2-oxoethyl)(methyl)carbamate To a solution of N-(sec-butyl)-5-((6 3 S,4S)-1 1
- Step 10 Synthesis of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin- 3-yl)-1 1 -ethyl-2 5 -hydroxy-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-2-oxoethyl)(methyl)carbamate To a solution of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 2 -(5-(sec
- Step 11 Synthesis of N-(sec-butyl)-5-((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-10,10-dimethyl-4-((S)-3- methyl-2-(N-methyl-2-(methylamino)acetamido)butanamido)-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8- oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-1 2 -yl)-N-methylnicotinamide To a solution of tert-butyl (2-(((2S)-1-(((6 3 S,4S)-1 2 -(5-(sec-butyl(methyl)carbamoyl)pyridin-3-yl)- 1 1 -ethyl-2 5
- Step 2 Synthesis of benzyl (2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-2-oxoethyl)carbamate To a solution of benzyl (2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-(((S)-1-
- Step 3 Synthesis of (2S)-2-(2-amino-N-methylacetamido)-N-((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2- ((S)-1-methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)- indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)-3-methylbutanamide To a solution of benzyl (2-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl
- Step 2 Synthesis of (R,Z)-3-(but-2-enoyl)-4-phenyloxazolidin-2-one
- pyridine 6.0 mL
- toluene 60.0 mL
- Lindlar Pd catalyst 594.57 mg, 2.88 mmol
- Step 4 Synthesis of (3S,4R)-1-benzyl-4-methylpyrrolidine-3-carboxylic acid
- a solution of LiOH ⁇ H 2 O (0.16 g, 6.860 mmol) and H 2 O2 (0.13 g, 3.76 mmol) in H 2 O (5 mL) was added to a solution of (R)-3-((3S,4R)-1-benzyl-4-methylpyrrolidine-3-carbonyl)-4-phenyloxazolidin-2-one (1.0 g, 2.74 mmol) in THF (15.0 mL) at 0 °C.
- Step 6 (3S,4R)-N-((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)-10,10- dimethyl-5,7-dioxo-2 5 -((triisopropylsilyl)oxy)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2-yl)-N,4- dimethylpyrrolidine-3-carboxamide To a solution of (3S,4R)-1-benzyl-N-((2S)-1-(((6 3 S,4S)-1 1 -ethyl-1
- Step 2 Synthesis of tert-butyl ((2S)-1-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)amino)-3-methyl-1-oxobutan-2- yl)(methyl)amino)-1-oxopropan-2-yl)(methyl)carbamate To a solution of tert-butyl ((2S)-1-(((2S)-1-(((6 3 S,4S)
- Step 3 Synthesis of (2S)-N-((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)- 10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-4-yl)-3-methyl-2-((S)-N-methyl-2-(methylamino)propanamido)butanamide To a solution of tert-butyl ((2S)-1-(((2S)-1-(((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1- methoxyethyl
- Step 2 Synthesis of methyl (S)-1-((S)-3-(4-bromothiazol-2-yl)-2-((tert- butoxycarbonyl)amino)propanoyl)hexahydropyridazine-3-carboxylate
- (S)-3-(4-bromothiazol-2-yl)-2-((tert-butoxycarbonyl)amino)propanoic acid 70 g, 199.3 mmol
- DCM 500 mL
- methyl (3S)-1,2-diazinane-3-carboxylate bis(trifluoroacetic acid) salt 111.28 g, 298.96 mmol
- NMM (219.12 mL.1993.0 mmol
- EDCI 76.41 g, 398.6 mmol
- HOBt 5.39 g, 39.89 mmol.
- Step 3 Synthesis of (S)-3-(1-ethyl-2-(2-(1-methoxyethyl)pyridin-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)-1H-indol-3-yl)-2,2-dimethylpropan-1-ol
- 3-(5-bromo-1-ethyl-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-3-yl)-2,2- dimethylpropan-1-ol (60 g, 134.7 mmol) in toluene (500 mL) at room temperature was added bis(pinacolato)diboron (51.31 g, 202.1 mmol), Pd(dppf)Cl2 (9.86 g, 13.48 mmol) and KOAc (26.44 g, 269.4 mmol).
- Step 4 Synthesis of methyl (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(4-(1-ethyl-3-(3-hydroxy- 2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)thiazol-2- yl)propanoyl)hexahydropyridazine-3-carboxylate To a solution of (S)-3-(1-ethyl-2-(2-(1-methoxyethyl)pyridin-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)-1H-indol-3-yl)-2,2-dimethylpropan-1-ol (30 g, 60.9 mmol) in toluene (600 mL), dioxane (200 mL
- Step 5 Synthesis of (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(4-(1-ethyl-3-(3-hydroxy-2,2- dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)thiazol-2- yl)propanoyl)hexahydropyridazine-3-carboxylic acid To a solution of methyl (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(4-(1-ethyl-3-(3-hydroxy-2,2- dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)thiazol-2- yl)propanoyl)hexahydropyridazine-3
- Step 6 Synthesis of tert-butyl ((6 3 S,4S,Z)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)pyridin-3-yl)-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-2(4,2)-thiazola-1(5,3)-indola-6(1,3)- pyridazinacycloundecaphane-4-yl)carbamate To a solution of (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(4-(1-ethyl-3-(3-hydroxy-2,2- dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)thia
- Step 2 Synthesis of tert-butyl ((6 3 S,4S)-2 5 -(benzyloxy)-10,10-dimethyl-5,7-dioxo-1 2 -(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate
- tert-butyl ((6 3 S,4S)-2 5 -(benzyloxy)-1 2 -iodo-10,10-dimethyl-5,7-dioxo- 6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(
- Step 3 Synthesis of benzyl 5-((6 3 S,4S)-2 5 -(benzyloxy)-4-((tert-butoxycarbonyl)amino)-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-1 2 -yl)-6-((S)-1-methoxyethyl)-3',6'-dihydro-[3,4'-bipyridine]-1'(2'H)-carboxylate To a solution of tert-butyl ((6 3 S,4S)-2 5 -(benzyloxy)-10,10-dimethyl-5,7-dioxo-1 2 -(4,4,5,5- tetramethyl-1,
- Step 4 Synthesis of benzyl 5-((6 3 S,4S)-2 5 -(benzyloxy)-4-((tert-butoxycarbonyl)amino)-1 1 -ethyl- 10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-1 2 -yl)-6-((S)-1-methoxyethyl)-3',6'-dihydro-[3,4'-bipyridine]-1'(2'H)-carboxylate To a solution of benzyl 5-((6 3 S,4S)-2 5 -(benzyloxy)-4-((tert-butoxycarbonyl)amino)-10,10-dimethyl- 5,
- Step 5 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5-(1- methylpiperidin-4-yl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)- indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate A solution of benzyl 5-((6 3 S,4S)-2 5 -(benzyloxy)-4-((tert-butoxycarbonyl)amino)-1 1 -ethyl-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4
- Step 6 Synthesis of (6 3 S,4S)-4-amino-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5-(1- methylpiperidin-4-yl)pyridin-3-yl)-10,10-dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-5,7-dione
- tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5-(1- methylpiperidin-4-yl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6
- Step 4 Synthesis of benzyl 4-(5-((6 3 S,4S)-2 5 -(benzyloxy)-4-((tert-butoxycarbonyl)amino)-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(1,3)- benzenacycloundecaphane-1 2 -yl)-6-((S)-1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate To a solution of benzyl (S)-4-(5-bromo-6-(1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate (3.29 g, 7.56 mmol) and tert-butyl ((6 3 S,4
- Step 5 Synthesis of benzyl 4-(5-((6 3 S, 4S)-2 5 -(benzyloxy) -4-((tert-butoxycarbonyl)amino)-1 1 - ethyl-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina- 2(1,3)-benzenacycloundecaphane-1 2 -yl)-6-((S)-1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate To a stirred solution of benzyl 4-(5-((6 3 S,4S)-2 5 -(benzyloxy)-4-((tert-butoxycarbonyl)amino)- 10,10-dimethyl-5,7-diox
- Step 6 Synthesis of tert-butyl ((6 3 S, 4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5- (piperazin-1-yl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-61,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a stirred solution of benzyl 4-(5-((6 3 S, 4S)-2 5 -(benzyloxy) -4-((tert-butoxycarbonyl)amino)-1 1 - ethyl-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,
- Step 7 Synthesis of tert-butyl((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5-(4- methylpiperazin-1-yl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)- indola-6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a stirred solution of tert-butyl ((6 3 S, 4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5- (piperazin-1-yl)pyridin-3-yl)-10,10-di
- Step 8 Synthesis of (6 3 S, 4S)-4-amino-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5-(4- methylpiperazin-1-yl)pyridine-3-yl)-10,10-dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-5,7-dione To a stirred solution of tert-butyl((6 3 S,4S)-1 1 -ethyl-2 5 -hydroxy-1 2 -(2-((S)-1-methoxyethyl)-5-(4- methylpiperazin-1-yl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo
- Step 2 Synthesis of benzyl (S)-4-(5-(5-bromo-3-(3-((tert-butyldiphenylsilyl)oxy)-2,2- dimethylpropyl)-1H-indol-2-yl)-6-(1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate
- (S)-4-(6-(1-methoxyethyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3- yl)piperazine-1-carboxylate 167 g, 346.905 mmol
- Step 3 Synthesis of benzyl (S)-4-(5-(5-bromo-3-(3-((tert-butyldiphenylsilyl)oxy)-2,2- dimethylpropyl)-1-ethyl-1H-indol-2-yl)-6-(1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate
- benzyl (S)-4-(5-(5-bromo-3-(3-((tert-butyldiphenylsilyl)oxy)-2,2- dimethylpropyl)-1H-indol-2-yl)-6-(1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate 146 g, 167.047 mmol
- Cs 2 CO 3 (163.28 g, 501.14 mmol
- Step 4 Synthesis of benzyl (S)-4-(5-(5-bromo-1-ethyl-3-(3-hydroxy-2,2-dimethylpropyl)-1H-indol- 2-yl)-6-(1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate
- Step 6 Synthesis of methyl (S)-1-((S)-3-(4-(2-(5-(4-((benzyloxy)carbonyl)piperazin-1-yl)-2-((S)-1- methoxyethyl)pyridin-3-yl)-1-ethyl-3-(3-hydroxy-2,2-dimethylpropyl)-1H-indol-5-yl)thiazol-2-yl)-2-((tert- butoxycarbonyl)amino)propanoyl)hexahydropyridazine-3-carboxylate
- Step 7 Synthesis of (S)-1-((S)-3-(4-(2-(5-(4-((benzyloxy)carbonyl)piperazin-1-yl)-2-((S)-1- methoxyethyl)pyridin-3-yl)-1-ethyl-3-(3-hydroxy-2,2-dimethylpropyl)-1H-indol-5-yl)thiazol-2-yl)-2-((tert- butoxycarbonyl)amino)propanoyl)hexahydropyridazine-3-carboxylic acid To a stirred mixture of methyl (S)-1-((S)-3-(4-(2-(5-(4-((benzyloxy)carbonyl)piperazin-1-yl)-2-((S)- 1-methoxyethyl)pyridin-3-yl)-1-ethyl-3-(3-hydroxy-2,2-dimethylpropyl)-1H-ind
- Step 8 Synthesis of benzyl 4-(5-((6 3 S,4S,Z)-4-((tert-butoxycarbonyl)amino)-1 1 -ethyl-10,10- dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-2(4,2)-thiazola-1(5,3)-indola-6(1,3)- pyridazinacycloundecaphane-1 2 -yl)-6-((S)-1-methoxyethyl)pyridin-3-yl)piperazine-1-carboxylate Into a 3-L round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed (S)-1-((S)-3-(4-(2-(5-(4-((benzyloxy)carbonyl)piperazin-1-yl)-2-((S)-1
- Step 9 Synthesis of tert-butyl ((6 3 S,4S,Z)-11-ethyl-1 2 -(2-((S)-1-methoxyethyl)-5-(piperazin-1- yl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-2(4,2)-thiazola-1(5,3)- indola-6(1,3)-pyridazinacycloundecaphane-4-yl)carbamate Into a 250-mL round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed benzyl 4-(5-((6 3 S,4S,Z)-4-((tert-butoxycarbonyl)amino)-1 1 -ethyl-10,10-dimethyl-5,7-dio
- Step 10 Synthesis of tert-butyl ((6 3 S,4S,Z)-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)-5-(4- methylpiperazin-1-yl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-2(4,2)- thiazola-1(5,3)-indola-6(1,3)-pyridazinacycloundecaphane-4-yl)carbamate Into a 1000-mL round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed tert-butyl ((6 3 S,4S,Z)-11-ethyl-1 2 -(2-((S)-1-methoxyethyl)-5-(piperazin-1-
- Step 10 Synthesis of (6 3 S,4S,Z)-4-amino-1 1 -ethyl-1 2 -(2-((S)-1-methoxyethyl)-5-(4- methylpiperazin-1-yl)pyridin-3-yl)-10,10-dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-2(4,2)-thiazola- 1(5,3)-indola-6(1,3)-pyridazinacycloundecaphane-5,7-dione
- Step 2 Synthesis of methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(difluoromethyl)-5-(1-ethyl-3- (3-hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)phenyl)propanoate
- a mixture of methyl (2S)-3-[3-bromo-5-(difluoromethyl)phenyl]-2-[(tert-butoxycarbonyl)amino] propanoate (90.0 g, 220.459 mmol), (S)-3-(1-ethyl-2-(2-(1-methoxyethyl)pyridin-3-yl)-5-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indol-3-yl)-2,2-
- Step 3 Synthesis of (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(difluoromethyl)-5-(1-ethyl-3-(3- hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)phenyl)propanoic acid
- methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(difluoromethyl)-5-(1-ethyl- 3-(3-hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)phenyl)propanoate (125.0 g, 180.159 mmol) in THF (800 mL) was added LiOH ⁇ H 2 O (
- Step 4 Synthesis of methyl (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(difluoromethyl)-5-(1- ethyl-3-(3-hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5- yl)phenyl)propanoyl)hexahydropyridazine-3-carboxylate
- methyl (3S)-1,2-diazinane-3-carboxylate 39.77 g, 275.814 mmol
- NMM 185.98 g, 1838.760 mmol
- Step 5 Synthesis of (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(difluoromethyl)-5-(1-ethyl-3- (3-hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5- yl)phenyl)propanoyl)hexahydropyridazine-3-carboxylic acid To a stirred solution of methyl (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(difluoromethyl)-5- (1-ethyl-3-(3-hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5- yl)phenyl)propanoy
- Step 6 Synthesis of tert-butyl ((6 3 S,4S)-2 5 -(difluoromethyl)-1 1 -ethyl-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a stirred solution of (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(difluoromethyl)-5-(1-ethyl- 3-(3-hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl
- Step 7 Synthesis of (6 3 S,4S)-4-amino-2 5 -(difluoromethyl)-1 1 -ethyl-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)- pyridazina-2(1,3)-benzenacycloundecaphane-5,7-dione To a stirred solution of tert-butyl ((6 3 S,4S)-2 5 -(difluoromethyl)-1 1 -ethyl-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4
- Step 2 Synthesis of methyl (2S)-3-[3-bromo-5-(fluoromethyl)phenyl]-2-[(tert- butoxycarbonyl)amino]propanoate
- Zn powder 32.40 g, 495.358 mmol
- I2 967.12 mg, 3.810 mmol
- DMF 10 mL
- the mixture was heated to 30 °C for 10 min.
- Step 3 Synthesis of methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(1-ethyl-3-(3-hydroxy-2,2- dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin -3-yl)-1H-indol-5-yl)-5-(fluoromethyl)phenyl)propanoate
- Step 4 Synthesis of (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(1-ethyl-3-(3-hydroxy-2,2- dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)-5-(fluoromethyl)phenyl)propanoic acid
- Step 5 Synthesis of methyl (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(1-ethyl-3-(3-hydroxy- 2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)-5- (fluoromethyl)phenyl)propanoyl)hexahydropyridazine-3-carboxylate To a stirred solution of (S)-2-((tert-butoxycarbonyl)amino)-3-(3-(1-ethyl-3-(3-hydroxy-2,2- dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)-5-(fluoromethyl)phenyl)propanoic acid (103 g, 155.633 mmol
- Step 6 Synthesis of (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(1-ethyl-3-(3-hydroxy-2,2- dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)-5- (fluoromethyl)phenyl)propanoyl)hexahydropyridazine-3-carboxylic acid To a stirred solution of methyl (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(1-ethyl-3-(3- hydroxy-2,2-dimethylpropyl)-2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-1H-indol-5-yl)-5- (fluoromethyl)phenyl)propanoyl)hex
- Step 7 Synthesis of tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -(fluoromethyl)-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl) -10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola- 6(1,3)-pyridazina-2(1,3)-benzenacycloundecaphane-4-yl)carbamate To a stirred solution of (S)-1-((S)-2-((tert-butoxycarbonyl)amino)-3-(3-(1-ethyl-3-
- Step 8 Synthesis of (2S)-N-((6 3 S,4S)-1 1 -ethyl-2 5 -(fluoromethyl)-1 2 -(2-((S)-1-methoxyethyl)pyridin- 3-yl)-10,10-dimethyl-5,7-dioxo-6 1 ,6 2 ,6 3 ,6 4 ,6 5 ,6 6 -hexahydro-1 1 H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina- 2(1,3)-benzenacycloundecaphane-4-yl)-3-methyl-2-(methylamino)butanamide To a stirred solution of tert-butyl ((6 3 S,4S)-1 1 -ethyl-2 5 -(fluoromethyl)-1 2 -(2-((S)-1- methoxyethyl)pyridin-3-yl) -10,10-dimethyl-5,7
- Step 1 Synthesis of N-methyl-N-((S)-1-((R)-1-tritylaziridine-2- carbonyl)pyrrolidine-3-carbonyl)-L-valine
- Step 1 Synthesis of methyl N-methyl-N-((S)-1-((R)-1-tritylaziridine-2-carbonyl)pyrrolidine-3- carbonyl)-L-valinate
- DIPEA 3.0 mL, 17.33 mmol
- HATU 2.636 g, 6.93 mmol
- Step 2 Synthesis of N-methyl-N-((S)-1-((R)-1-tritylaziridine-2-carbonyl)pyrrolidine-3-carbonyl)-L- valine
- a solution of methyl N-methyl-N-((S)-1-((R)-1-tritylaziridine-2-carbonyl)pyrrolidine-3-carbonyl)- L-valinate 1.0 g, 1.81 mmol
- THF 10 mL
- LiOH ⁇ H 2 O 0.3789 g, 9.03 mmol
- H 2 O 9.0 mL
- Step 2 Synthesis of N-methyl-N-((S)-1-((S)-1-tritylaziridine-2-carbonyl)pyrrolidine-3-carbonyl)-L- valine
- a stirred solution of methyl N-methyl-N-((S)-1-((S)-1-tritylaziridine-2-carbonyl)pyrrolidine-3- carbonyl)-L-valinate (1.10 g, 1.99 mmol) in THF (10.0 mL) at 0 °C was added a 1M solution of LiOH (9.93 mL, 9.93 mmol).
- the reaction mixture was warmed to room temperature and stirred for 16 h.
- Step 1 Synthesis of N-methyl-N-(1-((R)-1-tritylaziridine-2-carbonyl)piperidine-4- carbonyl)-L-valine
- Step 1 Synthesis of methyl N-methyl-N-(1-((R)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)- L-valinate
- DIPEA 0.204 mL, 11.70 mmol
- HATU 1.780 g, 4.68 mmol.
- Step 2 Synthesis of N-methyl-N-(1-((R)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L-valine
- a solution of methyl N-methyl-N-(1-((R)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L- valinate (0.700 g, 1.23 mmol) in THF (7.0 mL) at 0 °C was added a solution of LiOH ⁇ H 2 O (0.259 g, 6.17 mmol) in H 2 O (6.0 mL).
- the resulting solution was warmed to room temperature and stirred for 3 h.
- Step 1 Synthesis of methyl N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)- L-valinate
- methyl N-methyl-N-(piperidine-4-carbonyl)-L-valinate 0.550 g, 2.15 mmol
- (S)-1-tritylaziridine-2-carboxylic acid 0.848 g, 2.57 mmol
- DIPEA 1.9 mL, 10.7 mmol
- HATU 1.2 g, 3.2 mmol
- Step 2 Synthesis of N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L-valine
- a solution of methyl N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L- valinate (1.20 g, 2.11 mmol) in THF (11.0 mL) at 0 °C was added 1M LiOH (10.57 mL, 10.57 mmol). The resulting solution was warmed to room temperature and stirred for 16 h. The reaction mixture was cooled to 0 °C and quenched with sat. NH 4 Cl until pH 6.
- Step 2 Synthesis of N-methyl-N-(1-((R)-1-tritylaziridine-2-carbonyl)azetidine-3-carbonyl)-L-valine
- THF 10 mL
- a 1M solution of LiOH ⁇ H 2 O 6.03 mL
- the reaction mixture was stirred for 3 h.
- the resulting mixture was then quenched with sat. NH 4 Cl until pH 7.
- Step 1 Synthesis of N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)azetidine-3- carbonyl)-L-valine
- Step 1 Synthesis of methyl N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)azetidine-3-carbonyl)- L-valinate
- DIPEA 2.1 mL, 12.05 mmol
- HATU (1.37 g, 3.61 mmol).
- Step 2 Synthesis of N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)azetidine-3-carbonyl)-L-valine
- a solution of methyl N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)azetidine-3-carbonyl)-L- valinate (0.800 g, 1.48 mmol) in THF (8.0 mL) at 0 °C was added 1M LiOH (7.41 mL, 7.41 mmol).
- the reaction mixture was warmed to room temperature and stirred for 16 h and was then cooled to 0 °C and quenched with sat. NH 4 Cl until pH 6.
- Step 2 Synthesis of ethyl (2S,3R)-3-hydroxy-2-(((4-nitrophenyl)sulfonyl)oxy)-3-phenylpropanoate
- ethyl (2S,3R)-2,3-dihydroxy-3-phenylpropanoate 2.0 g, 9.5 mmol
- Et 3 N 3.97 mL, 28.5 mmol
- 4-nitrobenzenesulfonyl chloride (2.11 g, 9.51 mmol
- Step 3 Synthesis of ethyl (2R,3R)-2-azido-3-hydroxy-3-phenylpropanoate
- ethyl (2S,3R)-3-hydroxy-2-(((4-nitrophenyl)sulfonyl)oxy)-3-phenylpropanoate (2.80 g, 7.08 mmol) in THF (30 mL) at room temperature was added trimethylsilyl azide (1.63 g, 14.2 mmol) and TBAF (1M in THF, 14.16 mL, 14.16 mmol).
- THF trimethylsilyl azide
- TBAF TBAF
- reaction mixture was then cooled to room temperature, diluted with H 2 O (150 mL), and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over Na 2 SO 4 , filtered, and concentrated under reduced pressure. The residue was purified by normal phase chromatography (50% EtOAc/pet. ether) to afford the desired product (1.2 g, 64% yield) as an oil.
- Step 4 Synthesis of ethyl (2R,3S)-3-phenylaziridine-2-carboxylate
- ethyl (2R,3R)-2-azido-3-hydroxy-3-phenylpropanoate (1.20 g, 5.10 mmol) in DMF (15.0 mL)
- PPh3 (1.61 g, 6.12 mmol
- the reaction mixture was stirred at room temperature for 30 min and then heated to 80 °C for an additional 16 h.
- the reaction mixture was then cooled to room temperature, diluted with H 2 O (100 mL), and extracted with EtOAc (3 x 40 mL).
- Step 5 Synthesis of (2R,3S)-3-phenylaziridine-2-carboxylic acid
- MeOH ethyl (2R,3S)-3-phenylaziridine-2-carboxylate
- a solution of LiOH 18.8 mg, 0.784 mmol
- H 2 O H 2 O
- the reaction mixture was stirred for 1 h.
- the mixture was then diluted with MeCN (10 mL), and the resulting precipitate was collected by filtration and washed with MeCN (2 x 10 mL) to afford the crude desired product (70 mg) as a solid.
- the reaction mixture was stirred at room temperature for 16 h.
- the reaction was cooled to 0 °C and quenched with aq. KHSO 4 .
- the resulting mixture was extracted with EtOAc (3 x 100 mL) and the combined organic layers were washed with brine (2 x 80 mL), dried over Na 2 SO 4 , filtered, and concentrated under reduced pressure.
- the residue was purified by normal phase chromatography (50% EtOAc/pet. ether) to afford the desired product (2.2 g, 82% yield) as a solid.
- Step 2 Synthesis of ethyl (2R,3S)-3-hydroxy-2-(((4-nitrophenyl)sulfonyl)oxy)-3-phenylpropanoate
- ethyl (2R,3S)-2,3-dihydroxy-3-phenylpropanoate (2.10 g, 9.99 mmol) and Et 3 N (4.18 mL, 29.9 mmol) in DCM (30.0 mL) at 0 °C was added 4-nitrobenzenesulfonyl chloride (2.21 g, 9.99 mmol).
- the resulting mixture was stirred for 1 h and was then diluted with H 2 O (200 mL).
- Step 3 Synthesis of ethyl (2S,3S)-2-azido-3-hydroxy-3-phenylpropanoate
- ethyl (2R,3S)-3-hydroxy-2-(((4-nitrophenyl)sulfonyl)oxy)-3-phenylpropanoate (3.0 g, 7.59 mmol) in THF (30 mL) at room temperature was added trimethylsilyl azide (1.75 g, 15.2 mmol) and TBAF (1M in THF, 15.18 mL, 15.18 mmol).
- THF trimethylsilyl azide
- TBAF TBAF
- reaction mixture was then cooled to room temperature, diluted with H 2 O (150 mL), and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over Na 2 SO 4 , filtered, and concentrated under reduced pressure. The residue was purified by normal phase chromatography (50% EtOAc/pet. ether) to afford the desired product (1.4 g, 70% yield) as an oil.
- Step 4 Synthesis of ethyl (2S,3R)-3-phenylaziridine-2-carboxylate
- ethyl (2S,3S)-2-azido-3-hydroxy-3-phenylpropanoate (1.40 g, 5.95 mmol) in DMF (20.0 mL)
- PPh 3 (1.87 g, 7.14 mmol
- the reaction mixture was stirred at room temperature for 30 min and then heated to 80 °C for an additional 16 h.
- the reaction mixture was then cooled to room temperature, diluted with H 2 O (150 mL), and extracted with EtOAc (3 x 50 mL).
- Step 5 Synthesis of (2S,3R)-3-phenylaziridine-2-carboxylic acid To a solution of ethyl (2S,3R)-3-phenylaziridine-2-carboxylate (0.100 g, 0.523 mmol) in MeOH (0.70 mL) at 0 °C was added a solution of LiOH (18.8 mg, 0.784 mmol) in H 2 O (0.70 mL). The reaction mixture was stirred for 1 h. The mixture was then diluted with MeCN (10 mL), and the resulting precipitate was collected by filtration and washed with MeCN (2 x 10 mL) to afford the crude desired product (68 mg) as a solid.
- Step 2 Synthesis of methyl N-methyl-N-(methylglycyl)-L-valinate hydrochloride
- EtOAc EtOAc
- HCl 4M in dioxane
- Step 3 Synthesis of methyl N-methyl-N-(N-methyl-N-((R)-1-tritylaziridine-2-carbonyl)glycyl)-L- valinate
- a solution of methyl N-methyl-N-(methylglycyl)-L-valinate hydrochloride (1.0 g, 3.9 mmol) and (R)-1-tritylaziridine-2-carboxylic acid (1.30 g, 3.94 mmol) in DCM (25.0 mL) was added Et 3 N (2.76 mL, 19.8 mmol) and HATU (1.81 g, 4.76 mmol).
- Step 4 Synthesis of methyl N-(N-((R)-aziridine-2-carbonyl)-N-methylglycyl)-N-methyl-L-valinate
- DCM dimethylethyl-N-((R)-1-tritylaziridine-2-carbonyl)glycyl)-L-valinate
- Step 5 Synthesis of methyl N-(N-((R)-1-benzylaziridine-2-carbonyl)-N-methylglycyl)-N-methyl-L- valinate
- DIPEA 537 ⁇ L, 3.08 mmol
- benzyl bromide 101 ⁇ L, 0.848 mmol
- Step 6 Synthesis of N-(N-((R)-1-benzylaziridine-2-carbonyl)-N-methylglycyl)-N-methyl-L-valine
- a solution of methyl N-(N-((R)-1-benzylaziridine-2-carbonyl)-N-methylglycyl)-N-methyl-L- valinate 261.0 mg, 0.695 mmol
- a solution of LiOH (83.2 mg, 3.48 mmol) in H 2 O (3.50 mL).
- the reaction mixture was stirred for 1 h.
- the reaction was then quenched with sat. aq. NH 4 Cl.
- Step 1 Synthesis of N-(N-((R)-1-benzylaziridine-2-carbonyl)-N-methylglycyl)-N- methyl-L-valine
- Step 1 Synthesis of methyl N-(N-((S)-1-benzylaziridine-2-carbonyl)-N-methylglycyl)-N-methyl-L- valinate
- DIPEA 883 ⁇ L, 5.08 mmol
- benzyl bromide 165 ⁇ L, 1.39 mmol.
- Step 2 Synthesis of N-(N-((S)-1-benzylaziridine-2-carbonyl)-N-methylglycyl)-N-methyl-L-valine
- a solution of methyl N-(N-((S)-1-benzylaziridine-2-carbonyl)-N-methylglycyl)-N-methyl-L- valinate 270.0 mg, 0.719 mmol
- LiOH 8.6.1 mg, 3.59 mmol
- H 2 O 3.60 mL
- Step 2 Synthesis of methyl N-(1,4-diazepane-1-carbonyl)-N-methyl-L-valinate
- benzyl (S)-4-((1-methoxy-3-methyl-1-oxobutan-2-yl)(methyl)carbamoyl)-1,4- diazepane-1-carboxylate 2.0 g, 4.93 mmol
- MeOH MeOH
- Pd/C 10%wt, 1 g
- Step 3 Synthesis of methyl N-methyl-N-(4-((R)-1-tritylaziridine-2-carbonyl)-1,4-diazepane-1- carbonyl)-L-valinate
- DIPEA 1,4-diazepane-1-carbonyl
- HATU HCTU
- Step 4 Synthesis of N-methyl-N-(4-((R)-1-tritylaziridine-2-carbonyl)-1,4-diazepane-1-carbonyl)-L- valine
- MeOH 1,0.0 mL
- H 2 O 5.0 mL
- LiOH 0.66 g, 27.56 mmol
- Step 2 Synthesis of N-methyl-N-(4-((S)-1-tritylaziridine-2-carbonyl)-1,4-diazepane-1-carbonyl)-L- valine
- a solution of methyl N-methyl-N-(4-((S)-1-tritylaziridine-2-carbonyl)-1,4-diazepane-1-carbonyl)- L-valinate 1.0 g, 1.72 mmol
- MeOH 8.0 mL
- H 2 O 4.0 mL
- LiOH 411 mg, 17.16 mmol
- Step 2 Synthesis of methyl N-(5-aminopicolinoyl)-N-methyl-L-valinate
- MeOH MeOH
- Pd/C Pd/C
- Step 3 Synthesis of methyl N-methyl-N-(5-((S)-1-tritylaziridine-2-carboxamido)picolinoyl)-L- valinate To a solution (S)-1-tritylaziridine-2-carboxylic acid (55.9 mg, 0.17 mmol) in DCM at 0 °C was added isobutyl chloroformate (21.7 ⁇ L, 0.23 mmol) and N-methylmorpholine (66.8 ⁇ L, 0.61 mmol).
- Step 4 Synthesis of N-methyl-N-(5-((S)-1-tritylaziridine-2-carboxamido)picolinoyl)-L-valine
- N-methyl-N-(5-((S)-1-tritylaziridine-2-carboxamido)picolinoyl)-L-valinate 100.0 mg, 0.17 mmol
- THF 0.5 mL
- LiOH 20.76 mg, 0.87 mmol
- Step 1 Synthesis of N-methyl-N-(5-((R)-1-tritylaziridine-2- carboxamido)picolinoyl)-L-valine
- Step 1 Synthesis of methyl N-methyl-N-(5-((R)-1-tritylaziridine-2-carboxamido)picolinoyl)-L- valinate
- isobutyl chloroformate 440 ⁇ L, 3.39 mmol
- N-methylmorpholine 466 ⁇ L, 4.24 mmol
- Step 2 Synthesis of N-methyl-N-(5-((R)-1-tritylaziridine-2-carboxamido)picolinoyl)-L-valine
- N-methyl-N-(5-((R)-1-tritylaziridine-2-carboxamido)picolinoyl)-L-valinate 558.0 mg, 0.97 mmol
- THF 14 mL
- LiOH 115.9 mg, 4.84 mmol
- Step 2 Synthesis of 2-(tert-butyl) 3-methyl (2R,3S)-1-((R)-tert-butylsulfinyl)aziridine-2,3- dicarboxylate
- tert-butyl 2-bromoacetate 11.83 g, 60.65 mmol
- the resulting mixture was stirred for 30 min.
- methyl methyl (R,E)-2-((tert-butylsulfinyl)imino)acetate 5.8 g, 30.33 mmol).
- Step 3 Synthesis of (2R,3S)-1-((R)-tert-butylsulfinyl)-3-(methoxycarbonyl)aziridine-2-carboxylic acid
- 2-(tert-butyl) 3-methyl (2R,3S)-1-((R)-tert-butylsulfinyl)aziridine-2,3-dicarboxylate (302.0 mg, 0.99 mmol) in DCM (3.0 mL) at 0 °C was added TFA (1.50 mL). The resulting mixture was stirred for 1 h and then concentrated under reduced pressure to afford the desired crude product (300 mg).
- Step 2 Synthesis of 2-(tert-butyl) 3-methyl (2R,3S)-1-((S)-tert-butylsulfinyl)aziridine-2,3- dicarboxylate
- tert-butyl 2-bromoacetate 11.59 g, 59.40 mmol
- the resulting mixture was stirred for 30 min.
- methyl methyl (S,E)-2-((tert-butylsulfinyl)imino)acetate 5.68 g, 29.70 mmol).
- Step 3 Synthesis of (2R,3S)-1-((S)-tert-butylsulfinyl)-3-(methoxycarbonyl)aziridine-2-carboxylic acid
- 2-(tert-butyl) 3-methyl (2R,3S)-1-((S)-tert-butylsulfinyl)aziridine-2,3-dicarboxylate 457.0 mg, 1.50 mmol
- DCM 6.0 mL
- TFA 3.0 mL
- Step 2 Synthesis of ethyl (2R,3R)-1-((R)-tert-butylsulfinyl)-3-cyclopropylaziridine-2-carboxylate
- ethyl bromoacetate 3.83 g, 22.95 mmol
- the resulting mixture was warmed to -70 °C and stirred for 1 h.
- (R,E)-N-(cyclopropylmethylene)-2-methylpropane-2-sulfinamide 2.0 g, 11.48 mmol.
- Step 3 Synthesis of (2R,3R)-1-((R)-tert-butylsulfinyl)-3-cyclopropylaziridine-2-carboxylic acid
- ethyl (2R,3R)-1-((R)-tert-butylsulfinyl)-3-cyclopropylaziridine-2-carboxylate 900.0 mg, 3.47 mmol
- H 2 O 3.0 mL
- LiOH ⁇ H 2 O 218.4 mg, 5.21 mmol
- Step 2 Synthesis of ethyl (2R,3R)-1-((R)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylate
- ethyl (2R,3R)-1-((R)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylate To a solution of 1M LiHMDS (40.75 mL, 40.75 mmol) in THF (30.0 mL) at -78 °C was added ethyl bromoacetate (6.80 g, 40.75 mmol). The resulting mixture was stirred for 1 h. To the reaction mixture was then added (R,E)-N-ethylidene-2-methylpropane-2-sulfinamide (3.0 g, 20.38 mmol).
- Step 3 Synthesis of (2R,3R)-1-((R)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylic acid
- ethyl (2R,3R)-1-((R)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylate 1.0 g, 4.29 mmol
- H 2 O 6.4 mL
- LiOH ⁇ H 2 O 539.5 mg, 12.86 mmol
- Step 1 Synthesis of (2S,3S)-1-(S)-tert-butylsulfinyl)-3-methylaziridine-2- carboxylic acid
- Step 1 Synthesis of (S,E)-N-ethylidene-2-methylpropane-2-sulfinamide
- acetaldehyde 3.63 g, 82.51 mmol
- Step 2 Synthesis of ethyl (2S,3S)-1-((S)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylate
- ethyl (2S,3S)-1-((S)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylate To a solution of 1M LiHMDS (40.75 mL, 40.75 mmol) in THF (30.0 mL) at -78 °C was added ethyl bromoacetate (6.80 g, 40.75 mmol). The resulting mixture was stirred for 1 h. To the reaction mixture was then added (S,E)-N-ethylidene-2-methylpropane-2-sulfinamide (3.0 g, 20.38 mmol).
- Step 3 Synthesis of (2S,3S)-1-((S)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylic acid
- ethyl (2S,3S)-1-((S)-tert-butylsulfinyl)-3-methylaziridine-2-carboxylate 80.0 mg, 0.34 mmol
- H 2 O 0.2 mL
- LiOH ⁇ H 2 O 32.9 mg, 1.37 mmol
- Step 2 Synthesis of methyl N-((3S)-1-((1,2-dibromoethyl)sulfonyl)pyrrolidine-3-carbonyl)-N- methyl-L-valinate
- CCl4 100 mL
- Br2 2.77 mL, 54.15 mmol
- the resulting solution was stirred for overnight and was then quenched by the addition of sat. NaHCO 3 (100 mL).
- Step 3 Synthesis of methyl N-methyl-N-((S)-1-(((R)-1-methylaziridin-2-yl)sulfonyl)pyrrolidine-3- carbonyl)-L-valinate and methyl N-methyl-N-((S)-1-(((S)-1-methylaziridin-2-yl)sulfonyl)pyrrolidine-3- carbonyl)-L-valinate
- methanamine hydrochloride (1.07 g, 15.85 mmol)
- Et 3 N 7.37 mL, 52.82 mmol
- Step 4 Synthesis of N-methyl-N-((S)-1-(((R)-1-methylaziridin-2-yl)sulfonyl)pyrrolidine-3-carbonyl)- L-valine
- a solution of methyl N-methyl-N-((S)-1-(((R)-1-methylaziridin-2-yl)sulfonyl)pyrrolidine-3- carbonyl)-L-valinate (200.0 mg, 0.55 mmol) in THF (2.0 mL) and H 2 O (2.0 mL) at 0 °C was added LiOH (53.0 mg, 2.21 mmol).
- Step 5 Synthesis of N-methyl-N-((S)-1-(((S)-1-methylaziridin-2-yl)sulfonyl)pyrrolidine-3-carbonyl)- L-valine
- a solution of methyl N-methyl-N-((S)-1-(((S)-1-methylaziridin-2-yl)sulfonyl)pyrrolidine-3- carbonyl)-L-valinate (200.0 mg, 0.55 mmol) in THF (2.0 mL) and H 2 O (2.0 mL) at 0 °C was added LiOH (53.0 mg, 2.21 mmol).
- Step 2 Synthesis of 1-(tert-butyl) 3-methyl 3-(2-oxoethyl)pyrrolidine-1,3-dicarboxylate To a mixture of 1-(tert-butyl) 3-methyl 3-allylpyrrolidine-1,3-dicarboxylate (11.0 g, 40.84 mmol) and 2,6-lutidine (8.75 g, 81.68 mmol) in dioxane (190 mL) and H 2 O (19 mL) at 0 °C was added K 2 OsO 4 ⁇ 2H 2 O (0.75 g, 2.04 mmol).
- Step 3 Synthesis of 1-(tert-butyl) 3-methyl 3-(2-(((S)-1-(benzyloxy)-3-methyl-1-oxobutan-2- yl)amino)ethyl)pyrrolidine-1,3-dicarboxylate
- 1-(tert-butyl) 3-methyl 3-(2-oxoethyl)pyrrolidine-1,3-dicarboxylate (6.30 g, 23.220 mmol)
- benzyl L-valinate (7.22 g, 34.831 mmol) in MeOH (70 mL) at 0 °C was added ZnCl2 (4.75 g, 34.831 mmol).
- Step 5 Synthesis of benzyl (2S)-3-methyl-2-(1-oxo-2,7-diazaspiro[4.4]nonan-2-yl)butanoate
- tert-butyl 7-((S)-1-(benzyloxy)-3-methyl-1-oxobutan-2-yl)-6-oxo-2,7- diazaspiro[4.4]nonane-2-carboxylate 400.0 mg, 0.929 mmol
- DCM 3.0 mL
- TFA 1.50 mL, 20.195 mmol
- Step 6 Synthesis of benzyl (2S)-3-methyl-2-(1-oxo-7-((S)-1-tritylaziridine-2-carbonyl)-2,7- diazaspiro[4.4]nonan-2-yl)butanoate
- benzyl (2S)-3-methyl-2-(1-oxo-2,7-diazaspiro[4.4]nonan-2-yl)butanoate 400.0 mg, 1.21 mmol
- DIPEA 2.06 mL, 12.11 mmol
- DMF 5 mL
- COMU 673.55 mg, 1.574 mmol
- Step 7 Synthesis of (2S)-3-methyl-2-(1-oxo-7-((S)-1-tritylaziridine-2-carbonyl)-2,7- diazaspiro[4.4]nonan-2-yl)butanoic acid
- benzyl (2S)-3-methyl-2-(1-oxo-7-((S)-1-tritylaziridine-2-carbonyl)-2,7- diazaspiro[4.4]nonan-2-yl)butanoate 480.0 mg, 0.748 mmol
- toluene 35.0 mL
- Step 2 Synthesis of (2S)-3-methyl-2-(1-oxo-7-((R)-1-tritylaziridine-2-carbonyl)-2,7- diazaspiro[4.4]nonan-2-yl)butanoic acid
- benzyl (2S)-3-methyl-2-(1-oxo-7-((R)-1-tritylaziridine-2-carbonyl)-2,7- diazaspiro[4.4]nonan-2-yl)butanoate 510.0 mg, 0.80 mmol
- Pd/C 250.0 mg, 2.35 mmol
- Step 2 Synthesis of benzyl (S)-3-methyl-2-((S)-1-oxo-2,7-diazaspiro[4.4]nonan-2-yl)butanoate
- tert-butyl (5R)-7-[(2S)-1-(benzyloxy)-3-methyl-1-oxobutan-2-yl]-6-oxo-2,7- diazaspiro[4.4] nonane-2-carboxylate (1.40 g, 3.25 mmol) in DCM (14 mL) at 0 °C was added TFA (5.0 mL, 67.3 mmol). The resulting mixture was stirred at 0 °C for 1 h and was then concentrated under reduced pressure.
- Step 3 Synthesis of benzyl (S)-3-methyl-2-((R)-1-oxo-2,7-diazaspiro[4.4]nonan-2-yl)butanoate
- tert-butyl (5S)-7-[(2S)-1-(benzyloxy)-3-methyl-1-oxobutan-2-yl]-6-oxo-2,7- diazaspiro[4.4] nonane-2-carboxylate 1.0 g, 2.3 mmol
- DCM mL
- TFA 4.0 mL, 53.9 mmol
- Step 2 Synthesis of (2S)-3-methyl-2-(1-oxo-7-((R)-1-tritylaziridine-2-carbonyl)-2,7- diazaspiro[4.4]nonan-2-yl)butanoic acid
- Step 2 Synthesis of (S)-3-methyl-2-((R)-1-oxo-7-((R)-1-tritylaziridine-2-carbonyl)-2,7- diazaspiro[4.4]nonan-2-yl)butanoic acid
- Step 2 Synthesis of methyl (R)-3-methyl-2-(((S)-1-tritylaziridine-2-carboxamido)methyl)butanoate To a solution of (R)-3-methyl-2-(((S)-N-methyl-1-tritylaziridine-2-carboxamido)methyl)butanoic acid (840.0 mg, 1.90 mmol) in MeOH (5.0 mL) at 0 °C was added TMSCHN 2 (10.0 mL, 0.45 mmol).
- Step 3 Synthesis of methyl (R)-3-methyl-2-(((S)-N-methyl-1-tritylaziridine-2- carboxamido)methyl)butanoate
- a solution of methyl (R)-3-methyl-2-(((S)-1-tritylaziridine-2-carboxamido)methyl)butanoate (440.0 mg, 0.96 mmol) in THF (5.0 mL) at 0 °C was added NaH (46.25 mg, 1.93 mmol). The resulting mixture was stirred for 30 min and then MeI (1.37 g, 9.65 mmol) was added. The resulting mixture was warmed to room temperature and stirred for an additional 4 h.
- Step 4 Synthesis of (R)-3-methyl-2-(((S)-N-methyl-1-tritylaziridine-2- carboxamido)methyl)butanoic acid
- MeOH 3.0 mL
- H 2 O 3.0 mL
- LiOH ⁇ H 2 O 242.5 mg, 5.78 mmol
- Step 2 Synthesis of N-methyl-N-(1-((R)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L-valine
- a solution of methyl N-methyl-N-(1-((R)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L- valinate 500 mg, 0.881 mmol
- THF 5 mL
- LiOH 111 mg, 2.64 mmol
- H 2 O 2.6 mL
- Step 1 Synthesis of N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)piperidine-4- carbonyl)-L-valine
- Step 1 Synthesis of methyl N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)- L-valinate
- DIPEA 3.06 mL, 17.57 mmol
- HATU 2.67 g, 7.022 mmol
- Step 2 Synthesis of N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L-valine
- a solution of methyl N-methyl-N-(1-((S)-1-tritylaziridine-2-carbonyl)piperidine-4-carbonyl)-L- valinate (1.0 g, 1.76 mmol) in THF (15 mL) at 0 °C was added a solution of LiOH (370 mg, 8.80 mmol) in H 2 O (15 mL). The resulting mixture was warmed to room temperature and stirred for 3 h.
- the reaction mixture was acidified to pH 6 with 1M HCl.
- Step 1 Synthesis of sodium (R)-1-methyl-5-(1-tritylaziridine-2-carboxamido)- 1H-imidazole-2-carboxylate
- Step 1 Synthesis of methyl 5-amino-1-methyl-1H-imidazole-2-carboxylate To a mixture of methyl 1-methyl-5-nitro-1H-imidazole-2-carboxylate (1.0 g, 5.401 mmol) in MeOH (15 mL) was added Pd/C (500 mg). The resulting mixture was placed under an atmosphere of H2 (1 atm) and stirred for 3 h.
- Step 2 Synthesis of methyl (R)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1H-imidazole-2- carboxylate
- a mixture of (R)-1-tritylaziridine-2-carboxylic acid (2.55 g, 7.741 mmol) in DCM (12.0 mL) at 0 °C was added a solution of isobutyl chloroformate (845.06 mg, 6.187 mmol) and N-methylmorpholine (1.04 g, 10.282 mmol) in DCM in portions over 30 min.
- methyl 5- amino-1-methyl-1H-imidazole-2-carboxylate 800.0 mg, 5.156 mmol.
- Step 3 Synthesis of sodium (R)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1H-imidazole-2- carboxylate
- a mixture of methyl (R)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1H-imidazole-2- carboxylate (300 mg, 0.643 mmol) in THF (3 mL) was added a solution of NaOH (38.58 mg, 0.965 mmol) in H 2 O. The resulting mixture was stirred for 2 h and then concentrated under reduced pressure to afford the desired product (400 mg, crude).
- Step 2 Synthesis of benzyl methylglycinate To a stirred solution of benzyl N-(tert-butoxycarbonyl)-N-methylglycinate (10.0 g, 35.80 mmol) in DCM (100 mL) was added TFA (50 mL) dropwise at 0 °C. The resulting mixture was stirred for 1 h at 0 °C and then the resulting mixture was concentrated under reduced pressure to afford the desired product (7.80 g, crude).
- Step 3 Synthesis of benzyl N-methyl-N-(vinylsulfonyl)glycinate
- benzyl methylglycinate 15.60 g, 87.04 mmol
- Et 3 N 36.4 mL, 261.1 mmol
- MeCN 300 mL
- 2-chloroethanesulfonyl chloride 17.03 g, 104.47 mmol
- reaction mixture was cooled -50 °C and additional Et 3 N (36.4 mL, 261.1 mmol) was added to reaction mixture.
- the reaction mixture was warmed to room temperature and stirred for 1 h.
- the reaction was then quenched with H 2 O at 0 °C.
- the mixture was acidified to pH 6 with 1 M HCl aq and was then extracted with DCM (800 mL), dried over Na 2 SO 4 , filtered, and concentrated under reduced pressure.
- the residue was purified by silica gel column chromatography (33% EtOAc/pet. ether) to afford the desired product (7.53 g, 32.1% yield).
- Step 4 Synthesis of benzyl N-((1,2-dibromoethyl)sulfonyl)-N-methylglycinate To a solution of benzyl N-methyl-N-(vinylsulfonyl)glycinate (5.58 g, 20.7 mmol) in DCM (50 mL) at -20 °C was added a solution of Br2 (1.06 mL, 6.64 mmol) in DCM (10 mL). The resulting mixture was warmed to room temperature and stirred overnight.
- Step 5 Synthesis of benzyl (R)-N-methyl-N-((1-methylaziridin-2-yl)sulfonyl)glycinate and benzyl (S)-N-methyl-N-((1-methylaziridin-2-yl)sulfonyl)glycinate
- benzyl N-((1,2-dibromoethyl)sulfonyl)-N-methylglycinate 7.20 g, 16.78 mmol
- methylamine hydrochloride (3.39 g, 50.2 mmol) in DMSO (750 mL) was added Et 3 N (23.32 mL, 230.47 mmol).
- Step 6 Synthesis of (R)-N-methyl-N-((1-methylaziridin-2-yl)sulfonyl)glycine
- a suspension of benzyl (R)-N-methyl-N-((1-methylaziridin-2-yl)sulfonyl)glycinate (300.0 mg) and Pd(OH) 2 /C (150.0 mg) in THF at room temperature was stirred under an atmosphere of hydrogen (1 atm) for 3 h.
- the mixture was filtered, the filter cake was washed with MeOH (3 x 20 mL), and the filtrate was concentrated under reduced pressure to afford the desired product (206 mg, crude).
- Step 7 Synthesis of (S)-N-methyl-N-((1-methylaziridin-2-yl)sulfonyl)glycine
- Step 2 Synthesis of ethyl (2S,3S)-1-(tert-butylsulfinyl)-3-cyclopropylaziridine-2-carboxylate
- ethyl bromoacetate 481.91 mg, 2.886 mmol
- THF 5.0 mL
- LiHMDS 2.90 mL, 2.90 mmol
- the resulting mixture was stirred for 2 h at -78 °C and then a solution of (E)-N-(cyclopropylmethylene)-2-methylpropane-2-sulfinamide (250.0 mg, 1.443 mmol) was added.
- Step 3 Synthesis of (2S,3S)-1-(tert-butylsulfinyl)-3-cyclopropylaziridine-2-carboxylic acid
- a solution of ethyl (2S,3S)-1-(tert-butylsulfinyl)-3-cyclopropylaziridine-2-carboxylate (500.0 mg, 1.928 mmol) in THF (2.0 mL) and H 2 O (2.0 mL) at 0 °C was added LiOH ⁇ H 2 O (121.34 mg, 2.89 mmol). The reaction mixture was stirred for 1 h and was then acidified to pH 6 with 1 M HCl (aq.).
- Step 2 Synthesis of ethyl (2S,3R)-2,3-dihydroxy-4-methoxybutanoate
- ethyl (E)-4-methoxybut-2-enoate 5.0 g, 34.68mmol
- methanesulfonamide 3.30 g, 34.68 mmol
- H 2 O 100.0 mL
- AD-mix- ⁇ 48.63 g, 62.43 mmol
- Step 3 Synthesis of ethyl (4S,5R)-5-(methoxymethyl)-1,3,2-dioxathiolane-4-carboxylate 2-oxide
- SOCl2 5.47 g, 45.9 mmol
- the reaction mixture was then cooled to room temperature and concentrated under reduced pressure to afford the desired product (4.0 g, crude).
- Step 4 Synthesis of ethyl (2R,3S)-2-azido-3-hydroxy-4-methoxybutanoate
- ethyl (4S,5R)-5-(methoxymethyl)-1,3,2-dioxathiolane-4-carboxylate 2-oxide 4.0 g crude, 17.84 mmol
- DMF dimethyl methoxyethyl
- NaN3 sodium sulfate
- the resulting mixture was heated to 35 °C and stirred overnight.
- the reaction mixture was then diluted with H 2 O (200 mL) and was extracted with EtOAc (3 x 50 mL).
- Step 5 Synthesis of ethyl (2R,3R)-3-(methoxymethyl)aziridine-2-carboxylate
- ethyl (2R,3S)-2-azido-3-hydroxy-4-methoxybutanoate(1.0 g, 4.92 mmol) in DMF (10 mL) at 0 °C was added PPh3 (1.29 g, 4.92 mmol) in portions over 30 min.
- the reaction solution was then warmed to room temperature and stirred for 30 min.
- the reaction mixture was then heated to 85 °C and stirred until the reaction was complete.
- the reaction mixture was then concentrated under reduced pressure and purified by prep-TLC (33% EtOAc/pet.
- Step 7 Synthesis of (2R,3R)-3-(methoxymethyl)-1-tritylaziridine-2-carboxylic acid
- ethyl (2R, 3R)-3-(methoxymethyl)-1-(triphenylmethyl)aziridine-2-carboxylate 200.0 mg, 0.498 mmol
- H 2 O 5 mL
- Step 2 Synthesis of ethyl (2S,3S)-1-(tert-butylsulfinyl)-3-(4-methoxyphenyl)aziridine-2- carboxylate
- ethyl 2-bromoacetate 5.60 g, 33.5 mmol
- LiHMDS 1M in THF, 34 mL, 33.473 mmol
- a solution of (E)-N-(4-methoxybenzylidene)-2- methylpropane-2-sulfinamide (4 g, 16.74 mmol) in THF (20 mL) was added.
- Step 3 Synthesis of (2S,3S)-1-(tert-butylsulfinyl)-3-(4-methoxyphenyl)aziridine-2-carboxylic acid
- a solution of ethyl (2S,3S)-1-(tert-butylsulfinyl)-3-(4-methoxyphenyl)aziridine-2-carboxylate (80 0.0 mg, 2.68 mmol) in THF (2.0 mL) at 0 °C was added a solution of LiOH ⁇ H 2 O (309.46 mg, 7.38 mmol) i n H 2 O (3.0 mL). The resulting mixture was warmed to room temperature and stirred for 4 h.
- Step 2 Synthesis of ethyl (2R,3S)-3-hydroxy-3-(4-methoxyphenyl)-2-(((4- nitrophenyl)sulfonyl)oxy)propanoate
- ethyl (2R,3S)-2,3-dihydroxy-3-(4-methoxyphenyl)propanoate 3.0 g, 12.49 mmol
- Et 3 N 0.174 mL, 1.249 mmol
- DCM 30.0 mL
- 4-nitrobenzenesulfonyl chloride (2.76 g, 12.49 mmol). The resulting mixture was stirred for 1 h and was then diluted with H 2 O.
- Step 3 Synthesis of ethyl (2S,3S)-2-azido-3-hydroxy-3-(4-methoxyphenyl)propanoate
- ethyl (2R,3S)-3-hydroxy-3-(4-methoxyphenyl)-2-(((4- nitrophenyl)sulfonyl)oxy)propanoate (1.20 g, 2.82 mmol) in THF at 0 °C was added TBAF (1M in THF, 5.64 mL, 5.64 mmol) and TMSN 3 (648.79 mg, 5.64 mmol). The resulting mixture was heated to at 60 °C and stirred for 16 h.
- Step 4 Synthesis of ethyl (2S,3R)-3-(4-methoxyphenyl)aziridine-2-carboxylate To a solution of ethyl (2S,3S)-2-azido-3-hydroxy-3-(4-methoxyphenyl)propanoate (440.0 mg, 1.659 mmol) in DMF was added PPh3 (522.06 mg, 1.99 mmol). The resulting mixture was stirred at room temperature for 30 min and was then heated to 80 °C and stirred overnight.
- Step 5 Synthesis of (2S,3R)-3-(4-methoxyphenyl)aziridine-2-carboxylic acid
- ethyl (2S,3R)-3-(4-methoxyphenyl)aziridine-2-carboxylate 200.0 mg, 0.904 mmol
- LiOH ⁇ H 2 O 86.6 mg, 3.62 mmol
- the resulting mixture was stirred for 1 h and was then neutralized to pH 7 with HCl (aq.).
- Step 2 Synthesis of ethyl (2S,3R)-3-hydroxy-3-(4-methoxyphenyl)-2-(((4- nitrophenyl)sulfonyl)oxy)propanoate
- ethyl (2S,3R)-2,3-dihydroxy-3-(4-methoxyphenyl)propanoate 5.80 g, 24.14 mmol
- Et 3 N 10.1 mL, 72.42 mmol
- DCM 30.0 mL
- 4-nitrobenzenesulfonyl chloride 5.34 g, 24.1 mmol
- Step 3 Synthesis of ethyl (2R,3R)-2-azido-3-hydroxy-3-(4-methoxyphenyl)propanoate
- ethyl (2S,3R)-3-hydroxy-3-(4-methoxyphenyl)-2-(((4- nitrophenyl)sulfonyl)oxy)propanoate 5.0 g, 11.75 mmol
- THF THF
- TMSN 3 2.7 g, 23.5 mmol
- Step 4 Synthesis of ethyl (2R,3S)-3-(4-methoxyphenyl)aziridine-2-carboxylate To a solution of ethyl (2R,3R)-2-azido-3-hydroxy-3-(4-methoxyphenyl)propanoate (2.30 g, 8.67 mmol) in DMF was added PPh3 (2.73 g, 10.4 mmol). The resulting mixture was stirred at room temperature for 30 min and was then heated to 80 °C and stirred overnight.
- Step 5 Synthesis of (2R,3S)-3-(4-methoxyphenyl)aziridine-2-carboxylic acid
- ethyl (2S,3R)-3-(4-methoxyphenyl)aziridine-2-carboxylate 200.0 mg, 0.904 mmol
- LiOH ⁇ H 2 O 86.6 mg, 3.62 mmol
- the resulting mixture was stirred for 1 h and was then neutralized to pH 7 with HCl (aq.).
- Step 2 Synthesis of ethyl (2S,3S)-1-((S)-tert-butylsulfinyl)-3-phenylaziridine-2-carboxylate
- ethyl bromoacetate 798 mg, 4.78 mmol
- LiHMDS 1M in THF, 4.78 mL, 4.78 mmol
- (S,E)-N-benzylidene-2-methylpropane-2-sulfinamide 500 mg, 2.39 mmol
- THF 5 mL
- Step 3 Synthesis (2S,3S)-1-((S)-tert-butylsulfinyl)-3-phenylaziridine-2-carboxylic acid
- ethyl (2S,3S)-1-((S)-tert-butylsulfinyl)-3-phenylaziridine-2-carboxylate 600 mg, 2.03 mmol
- THF 4.0 mL
- LiOH 97.2 mg, 4.06 mmol
- H 2 O 4.0 mL
- Step 2 Synthesis of ethyl (2R,3R)-1-((R)-tert-butylsulfinyl)-3-phenylaziridine-2-carboxylate
- ethyl bromoacetate 6.38 g, 38.2 mmol
- LiHMDS 1M in THF, 7.19 mL, 42.9 mmol
- (R,E)-N-benzylidene-2-methylpropane-2- sulfinamide (4.0 g, 19.1 mmol) in THF (50 mL) was added in portions over 20 min.
- Step 3 Synthesis (2R,3R)-1-((R)-tert-butylsulfinyl)-3-phenylaziridine-2-carboxylic acid
- ethyl (2R,3R)-1-((R)-tert-butylsulfinyl)-3-phenylaziridine-2-carboxylate 200 mg, 0.677 mmol
- THF 1.5 mL
- LiOH 32.4 mg, 1.35 mmol
- H 2 O 1.3 mL
- Step 2 Synthesis of tert-butyl N-(2,3-dibromopropanoyl)-N-methylglycinate
- a solution of tert-butyl N-acryloyl-N-methylglycinate (2.0 g, 10.1 mmol) in DCM (40 mL) at -20 °C was added Br2 (3.21 g, 20.1 mmol).
- the resulting mixture was stirred for 2 h at -20 °C and then quenched by the addition of Na2S2O3 (100 mL).
- Step 3 Synthesis of tert-butyl (S)-N-(1-(2-methoxyethyl)aziridine-2-carbonyl)-N-methylglycinate and tert-butyl (R)-N-(1-(2-methoxyethyl)aziridine-2-carbonyl)-N-methylglycinate
- tert-butyl N-(2,3-dibromopropanoyl)-N-methylglycinate 4.0 g, 11.1 mmol
- 2- methoxyethan-1-amine 4.18 g, 55.7 mmol
- Et 3 N 4.66 mL, 33.4 mmol
- enantiomers were separated by chiral preparative normal phase chromatography (hexane, 10 mM NH3-MeOH/EtOH) to afford tert-butyl (S)-N-(1-(2-methoxyethyl)aziridine-2-carbonyl)-N-methylglycinate (400 mg, 33.3% yield) and tert-butyl (R)-N-(1-(2-methoxyethyl)aziridine-2-carbonyl)-N-methylglycinate (360 mg, 30% yield).
- Step 4 Synthesis of (S)-N-(1-(2-methoxyethyl)aziridine-2-carbonyl)-N-methylglycine
- DCM methylethyl
- TFA trifluoroacetyl
- the resulting mixture was stirred at 2 h at 0 °C and then concentrated under reduced pressure to afford the desired product (250 mg, crude) which was used without further purification.
- Step 5 Synthesis of (R)-N-(1-(2-methoxyethyl)aziridine-2-carbonyl)-N-methylglycine To a solution tert-butyl (R)-N-(1-(2-methoxyethyl)aziridine-2-carbonyl)-N-methylglycinate (180 mg, 0.661 mmol) in DCM (6.0 mL) at 0 °C was added TFA (3.0 mL).
- Step 2 Synthesis of methyl N-(1-((1,2-dibromoethyl)sulfonyl)piperidine-4-carbonyl)-N-methyl-L- valinate
- a solution of methyl N-methyl-N-(1-(vinylsulfonyl)piperidine-4-carbonyl)-L-valinate (580 mg, 1.67 mmol) in CCl4 (28 mL) at room temperature was added Br2 (580 mg, 1.67 mmol) The resulting mixture was stirred overnight at room temperature and then quenched by the addition of sat. NaHCO 3 (30 mL).
- Step 3 Synthesis of methyl N-methyl-N-(1-(((R)-1-methylaziridin-2-yl)sulfonyl)piperidine-4- carbonyl)-L-valinate and methyl N-methyl-N-(1-(((S)-1-methylaziridin-2-yl)sulfonyl)piperidine-4-carbonyl)- L-valinate
- methanamine hydrochloride (1.92 g, 28.436 mmol
- Et 3 N 13.2 mL, 94.8 mmol
- Step 4 Synthesis of N-methyl-N-(1-(((R)-1-methylaziridin-2-yl)sulfonyl)piperidine-4-carbonyl)-L- valine
- a solution of methyl N-methyl-N-(1-(((R)-1-methylaziridin-2-yl)sulfonyl)piperidine-4-carbonyl)- L-valinate 200 mg, 0.533 mmol
- THF 2.0 mL
- 1M LiOH 1 mL
- the resulting mixture was stirred for 3 h at room temperature and then acidified to pH 6 with 1M HCl.
- Step 5 Synthesis of N-methyl-N-(1-(((S)-1-methylaziridin-2-yl)sulfonyl)piperidine-4-carbonyl)-L- valine
- N-methyl-N-(1-(((S)-1-methylaziridin-2-yl)sulfonyl)piperidine-4-carbonyl)-L- valine To a solution methyl N-methyl-N-(1-(((S)-1-methylaziridin-2-yl)sulfonyl)piperidine-4-carbonyl)-L- valinate (300 mg, 0.799 mmol) in THF (3.0 mL) at 0 °C was added 1M LiOH (3.0 mL). The resulting mixture was stirred for 3 h at room temperature and then acidified to pH 6 with 1M HCl.
- Step 3 Synthesis of methyl N-methyl-N-(1-(((R)-1-methylaziridin-2-yl)sulfonyl)azetidine-3- carbonyl)-L-valinate and methyl N-methyl-N-(1-(((S)-1-methylaziridin-2-yl)sulfonyl)azetidine-3-carbonyl)-L- valinate
- methanamine hydrochloride 110.0 mg, 1.63 mmol
- Et 3 N 0.758 mL, 5.44 mmol
- the diastereomers were separated by chiral prep normal phase chromatography (hexane, 10 mM NH3-MeOH /IPA) to afford methyl N-methyl-N-(1-(((R)-1-methylaziridin- 2-yl)sulfonyl)azetidine-3-carbonyl)-L-valinate (0.59 g, 35% yield) and methyl N-methyl-N-(1-(((S)-1- methylaziridin-2-yl)sulfonyl)azetidine-3-carbonyl)-L-valinate (0.56 g, 33% yield).
- Step 5 Synthesis of N-methyl-N-(1-(((S)-1-methylaziridin-2-yl)sulfonyl)azetidine-3-carbonyl)-L- valine
- a solution of methyl N-methyl-N-(1-(((S)-1-methylaziridin-2-yl)sulfonyl)azetidine-3-carbonyl)-L- valinate 365.0 mg, 1.05 mmol
- THF 2.0 mL
- H 2 O 2.0 mL
- LiOH hydrate 132.0 mg, 3.15 mmol
- Step 2 Synthesis of benzyl 2-((1R,5S)-2,4-dioxo-6-trityl-3,6-diazabicyclo[3.1.0]hexan-3-yl)acetate
- benzyl 2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetate (1.0 g, 4.0 mmol) in toluene (10 mL) was added trityl azide (1.36 g, 4.89 mmol). The resulting mixture was stirred overnight at 120 °C and then concentrated under reduced pressure.
- Step 3 Synthesis of 2-((1R,5S)-2,4-dioxo-6-trityl-3,6-diazabicyclo[3.1.0]hexan-3-yl)acetic acid
- benzyl 2-((1R,5S)-2,4-dioxo-6-trityl-3,6-diazabicyclo[3.1.0]hexan-3-yl)acetate 220 mg, 0.438 mmol
- Pd(OH) 2 /C 60 mg.
- Step 2 Synthesis of 1-(tert-butyl) 3-methyl 3-(2-oxoethyl)azetidine-1,3-dicarboxylate To a solution of 1-(tert-butyl) 3-methyl 3-allylazetidine-1,3-dicarboxylate (6.0 g, 23 mmol) and 2,6- lutidine (504 mg, 47.0 mmol) in dioxane (60 mL) and H 2 O (60 mL) at 0 °C was added K 2 OsO 4 ⁇ 2H 2 O (433 mg, 1.18 mmol).
- Step 4 Synthesis of tert-butyl (S)-6-(1-methoxy-3-methyl-1-oxobutan-2-yl)-5-oxo-2,6- diazaspiro[3.4]octane-2-carboxylate
- 1-(tert-butyl) 3-methyl (S)-3-(2-((1-methoxy-3-methyl-1-oxobutan-2- yl)amino)ethyl)azetidine-1,3-dicarboxylate 6.0 g, 16 mmol
- DIPEA 28.0 mL, 161 mmol
- toluene 60 mL
- DMAP 197 mg, 1.61 mmol
- Step 7 Synthesis of (S)-3-methyl-2-(5-oxo-2-((S)-1-tritylaziridine-2-carbonyl)-2,6- diazaspiro[3.4]octan-6-yl)butanoic acid
- methyl (S)-3-methyl-2-(5-oxo-2-((S)-1-tritylaziridine-2-carbonyl)-2,6- diazaspiro[3.4]octan-6-yl)butanoate 700 mg, 1.27 mmol
- THF 10 mL
- H 2 O 2.0 mL
- Step 2 Synthesis of (S)-3-methyl-2-(5-oxo-2-((R)-1-tritylaziridine-2-carbonyl)-2,6- diazaspiro[3.4]octan-6-yl)butanoic acid
- methyl (S)-3-methyl-2-(5-oxo-2-((R)-1-tritylaziridine-2-carbonyl)-2,6- diazaspiro[3.4]octan-6-yl)butanoate 900 mg, 1.63 mmol
- THF 10 mL
- H 2 O 2.5 mL
- Step 2 Synthesis of benzyl (S)-1-((R)-2-(methoxycarbonyl)aziridine-1-carbonyl)pyrrolidine-3- carboxylate
- methyl (R)-aziridine-2-carboxylate (1.0 g, 9.90 mmol) and benzyl (S)-pyrrolidine-3- carboxylate (2.63 g, 10.9 mmol, HCl salt) in DCM (30.0 mL) at -10 °C was added DIPEA (10.3 mL, 59.3 mmol) followed by triphosgene (880 mg, 2.97 mmol).
- Step 3 Synthesis of (S)-1-((R)-2-(methoxycarbonyl)aziridine-1-carbonyl)pyrrolidine-3-carboxylic acid
- benzyl (S)-1-((R)-2-(methoxycarbonyl)aziridine-1-carbonyl)pyrrolidine-3- carboxylate 200 mg, 600 ⁇ mol
- MeOH MeOH
- DCM DCM
- Pd(OH) 2 /C 130 mg, 90 ⁇ mol
- Step 3 Synthesis of (S)-1-((S)-2-(methoxycarbonyl)aziridine-1-carbonyl)pyrrolidine-3-carboxylic acid
- benzyl (S)-1-((S)-2-(methoxycarbonyl)aziridine-1-carbonyl)pyrrolidine-3- carboxylate 130 mg, 390 ⁇ mol
- MeOH 3 mL
- DCM 3 mL
- Pd(OH) 2 /C 55 mg, 39 ⁇ mol
- Step 2 Synthesis of ethyl (2S,3R)-3-cyclopropyl-3-hydroxy-2-(((4- nitrophenyl)sulfonyl)oxy)propanoate
- ethyl (2S,3R)-3-cyclopropyl-2,3-dihydroxypropanoate 5.40 g, 31.0 mmol
- Et 3 N 13.0 mL, 93.0 mmol
- DCM 20 mL
- 4-nitrobenzenesulfonyl chloride 6.53 g, 29.5 mmol
- reaction mixture was stirred for 1.5 h and was then extracted with DCM (3 x 200 mL). The combined organic layers were washed with brine (100 mL), dried with Na 2 SO 4 , filtered, and concentrated under reduced pressure. Purification by silica gel column chromatography (33% EtOAc/pet. ether) afforded desired product (6.9 g, 62% yield).
- Step 3 Synthesis of ethyl (2R,3R)-2-azido-3-cyclopropyl-3-hydroxypropanoate
- ethyl (2S,3R)-3-cyclopropyl-3-hydroxy-2-(((4-nitrophenyl)sulfonyl)oxy)propanoate (6.90 g, 19.2 mmol) and NaN3 (6.24 g, 96.0 mmol) in DMF (70.0 mL) was heated to 50 °C.
- the reaction mixture was stirred for 5 h and then extracted with EtOAc (3 x 200 mL).
- the combined organic layers were washed with brine (100 mL), dried with Na 2 SO 4 , filtered, and concentrated under reduced pressure.
- Step 4 Synthesis of ethyl (2R,3S)-3-cyclopropylaziridine-2-carboxylate A mixture of triphenylphosphine (1.84 g, 7.02 mmol) in DMF (5 mL) was stirred at 0 °C. After 5 min ethyl (2R,3R)-2-azido-3-cyclopropyl-3-hydroxypropanoate (1.40 g, 7.03 mmol) was added and the reaction was warmed to room temperature. The reaction mixture was heated to 80 °C and stirred for 1 h.
- Step 5 Synthesis of lithium (2R,3S)-3-cyclopropylaziridine-2-carboxylate To a mixture of ethyl (2R,3S)-3-cyclopropylaziridine-2-carboxylate (230 mg, 1.5 mmol) in MeOH (3.0 mL) was added LiOH•H 2 O (125 mg, 3.0 mmol). The reaction was stirred for 3 h and then filtered. The filtrate was concentrated under reduced pressure which afforded the desired product (150 mg, crude). LCMS (ESI) m/z: [M + H] calcd for C6H9NO2: 128.07; found 128.2. Intermediate A-57.
- Step 2 Synthesis of ethyl (2S,3R)-3-cyclopropyl-3-hydroxy-2-(((4- nitrophenyl)sulfonyl)oxy)propanoate
- ethyl (2S,3R)-3-cyclopropyl-2,3-dihydroxypropanoate 5.40 g, 31.0 mmol
- Et 3 N 13.0 mL, 93.0 mmol
- DCM 20 mL
- 4-nitrobenzenesulfonyl chloride 6.53 g, 29.5 mmol
- reaction mixture was stirred for 1.5 h and was then extracted with DCM (3 x 200 mL). The combined organic layers were washed with brine (100 mL), dried with Na 2 SO 4 , filtered, and concentrated under reduced pressure. Purification by silica gel column chromatography (33% EtOAc/pet. ether) afforded desired product (6.9 g, 62% yield).
- Step 3 Synthesis of ethyl (2R,3R)-2-azido-3-cyclopropyl-3-hydroxypropanoate
- ethyl (2S,3R)-3-cyclopropyl-3-hydroxy-2-(((4-nitrophenyl)sulfonyl)oxy)propanoate (6.90 g, 19.2 mmol) and NaN3 (6.24 g, 96.0 mmol) in DMF (70.0 mL) was heated to 50 °C.
- the reaction mixture was stirred for 5 h and then extracted with EtOAc (3 x 200 mL).
- the combined organic layers were washed with brine (100 mL), dried with Na 2 SO 4 , filtered, and concentrated under reduced pressure.
- Step 4 Synthesis of ethyl (2R,3S)-3-cyclopropylaziridine-2-carboxylate A mixture of triphenylphosphine (1.84 g, 7.02 mmol) in DMF (5 mL) was stirred at 0 °C. After 5 min ethyl (2R,3R)-2-azido-3-cyclopropyl-3-hydroxypropanoate (1.40 g, 7.03 mmol) was added and the reaction was warmed to room temperature. The reaction mixture was heated to 80 °C and stirred for 1 h.
- Step 5 Synthesis of lithium (2R,3S)-3-cyclopropylaziridine-2-carboxylate To a mixture of ethyl (2R,3S)-3-cyclopropylaziridine-2-carboxylate (230 mg, 1.5 mmol) in MeOH (3.0 mL) was added LiOH•H 2 O (125 mg, 3.0 mmol). The reaction was stirred for 3 h and then filtered. The filtrate was concentrated under reduced pressure which afforded the desired product (150 mg, crude). LCMS (ESI) m/z: [M + H] calcd for C6H9NO2: 128.07; found 128.2. Intermediate A-58.
- Step 2 Synthesis of lithium (2S,3R)-3-cyclopropylaziridine-2-carboxylate To a solution of ethyl (2S,3R)-3-cyclopropylaziridine-2-carboxylate (450 mg, 2.9 mmol) in THF (6.0 mL) and H 2 O (2.0 mL) was added LiOH (90 mg, 3.8 mmol). The reaction was stirred for 2 h and then filtered. The filtrate was concentrated under reduced pressure which afforded the desired product (300 mg, crude). Intermediate A-59.
- Step 2 Synthesis of methyl (R)-3-methyl-2-((methylamino)methyl)butanoate
- methyl (R)-2-(((tert-butoxycarbonyl)(methyl)amino)methyl)-3-methylbutanoate 500 mg, 1.93 mmol
- DCM 5.0 mL
- TFA 2.50 mL
- the resulting mixture was warmed to room temperature. After 2 h the reaction mixture was concentrated under reduced pressure to afford desired product (600 mg, crude) as a yellow solid.
- Step 3 Synthesis of methyl (R)-3-methyl-2-(((R)-N-methyl-1-tritylaziridine-2- carboxamido)methyl)butanoate
- methyl (R)-3-methyl-2-((methylamino)methyl)butanoate 550 mg, 3.45 mmol
- (R)-1-tritylaziridine-2-carboxylic acid (1.25 g, 3.80 mmol) in DCM (5.0 mL) at 0 °C
- DIPEA 1.81 mL, 10.4 mmol
- HATU (1.58 g, 4.15 mmol
- Step 4 Synthesis of (R)-3-methyl-2-(((R)-N-methyl-1-tritylaziridine-2- carboxamido)methyl)butanoic acid
- methyl (R)-3-methyl-2-(((R)-N-methyl-1-tritylaziridine-2- carboxamido)methyl)butanoate 200 mg, 0.425 mmol
- THF 2.0 mL
- LiOH•H 2 O 89 mg, 2.13 mmol
- H 2 O 2.0 mL
- Step 2 Synthesis of methyl (R)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1 -imidazole-2- carboxylate
- (R)-1-tritylaziridine-2-carboxylic acid (2.55 g, 7.741 mmol) in DCM (12.0 mL) at 0 °C was added in portions over 30 min to a solution of isobutyl chloroformate (845.1 mg, 6.187 mmol) and N- methylmorpholine (1.04 g, 10.282 mmol) in DCM.
- Step 3 Synthesis of sodium (R)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1H-imidazole-2- carboxylate
- a solution of methyl (R)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1 -imidazole-2- carboxylate (300.0 mg, 0.643 mmol) in THF (3 mL) at room temperature was added NaOH•H 2 O (38.6 mg, 0.965 mmol). The resulting solution was warmed to room temperature and stirred for 2 h.
- Step 2 Synthesis of (S)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1H-imidazole-2-carboxylic To a solution of NaOH (146.6 mg, 3.665 mmol) in H 2 O (3.6 mL) at 0 °C was added a solution of methyl (S)-1-methyl-5-(1-tritylaziridine-2-carboxamido)-1H-imidazole-2-carboxylate (380.0 mg, 0.815 mmol) in MeOH (5 mL).
- Step 2 Synthesis of methyl 4-((2S)-1-(tert-butylsulfinyl)aziridin-2-yl)benzoate Methyl (E)-4-(((tert-butylsulfinyl)imino)methyl)benzoate (500.0 mg, 1.863 mmol), Me3S + I- (1.14 g, 5.590 mmol), and 60% NaH (134.15 mg, 5.590 mmol) were dissolved in DMSO (10.0 mL) at room temperature. The resulting mixture was stirred for 2 h and then the reaction was quenched by the addition of sat. aq. NH 4 Cl (10 mL).
- Step 3 Synthesis of 4-((2S)-1-(tert-butylsulfinyl)aziridin-2-yl)benzoic acid
- a solution of methyl 4-((2S)-1-(tert-butylsulfinyl)aziridin-2-yl)benzoate (400.0 mg, 1.422 mmol) in THF (5.0 mL) and H 2 O (1.0 mL) was added LiOH (103.0 mg, 4.301 mmol). The resulting mixture was stirred overnight at room temperature and was then acidified to pH ⁇ 3 with 1 M HCl. The mixture was extracted with EtOAc (3 x 200 mL), dried over Na 2 SO 4 , filtered, and concentrated under reduced pressure.
- Step 1 Synthesis of (S)-3-methyl-2-((R)-2-oxo-3-((R)-1-tritylaziridine-2- carboxamido)pyrrolidin-1-yl)butanoic acid
- Step 1 Synthesis of benzyl (S)-2-((R)-3-amino-2-oxopyrrolidin-1-yl)-3-methylbutanoate
- benzyl (S)-2-((R)-3-((tert-butoxycarbonyl)amino)-2-oxopyrrolidin-1-yl)-3- methylbutanoate 1.0 g, 2.561 mmol
- DCM 1,4-dioxane
- Step 2 Synthesis of benzyl (S)-3-methyl-2-((R)-2-oxo-3-((R)-1-tritylaziridine-2- carboxamido)pyrrolidin-1-yl)butanoate
- benzyl (S)-2-((R)-3-amino-2-oxopyrrolidin-1-yl)-3-methylbutanoate 450.0 mg, 1.550 mmol
- (R)-1-tritylaziridine-2-carboxylic acid (765.8 mg, 2.325 mmol) in DMF were added HATU (1.179 g, 3.100 mmol) and DIPEA (1.35 mL, 7.75 mmol) dropwise at 0 °C.
- Step 3 Synthesis of (S)-3-methyl-2-((R)-2-oxo-3-((R)-1-tritylaziridine-2-carboxamido)pyrrolidin-1- yl)butanoic acid
- a suspension of benzyl (S)-3-methyl-2-((R)-2-oxo-3-((R)-1-tritylaziridine-2- carboxamido)pyrrolidin-1-yl)butanoate (430.0 mg, 0.715 mmol) and Pd(OH) 2 /C (230.0 mg, 1.638 mmol) were in THF (5 mL) was stirred for 3 h under and atmosphere of hydrogen (1 atm).
- Step 2 Synthesis of benzyl (S)-1-isopropylaziridine-2-carboxylate To a solution of benzyl isopropyl-L-serinate (2.70 g, 11.378 mmol), Et 3 N (4.75 mL, 34.134 mmol) and DMAP (2.57 mg, 0.021 mmol) in DCM (50.0 mL) was added a solution of TsCl (2.60 g, 13.65 mmol) in DCM dropwise at 0 °C. The resulting mixture was stirred overnight at room temperature and was then stirred for 4 h at 40 °C.
- Step 3 Synthesis of potassium (S)-1-isopropylaziridine-2-carboxylate To a solution of benzyl (S)-1-isopropylaziridine-2-carboxylate (800.0 mg, 3.65 mmol) and H 2 O (6.0 mL) and THF (8.0 mL) was added a solution of KOH (245.62 mg, 4.378 mmol) in H 2 O (2.0 mL) dropwise at 0 °C. The resulting mixture was stirred for 2 h at room temperature. The mixture was diluted with H 2 O (10 mL) and the aqueous layer was washed with MTBE (3 x 8 mL).
- Step 2 Synthesis of benzyl (R)-1-isopropylaziridine-2-carboxylate
- benzyl isopropyl-D-serinate (1.75 g, 7.375 mmol)
- Et 3 N (2.58 mL, 18.437 mmol)
- DMAP 90.09 mg, 0.737 mmol
- DCM 30.0 mL
- TsCl 1.69 g, 8.850 mmol
- the resulting mixture was stirred overnight at room temperature before being stirred for 4 h at 40 °C.
- the mixture was diluted with H 2 O (80 mL) and then extracted with DCM (3 x 50 mL).
- Step 3 Synthesis of potassium (R)-1-isopropylaziridine-2-carboxylate To a solution of benzyl (R)-1-isopropylaziridine-2-carboxylate (600.0 mg, 2.736 mmol) in H 2 O (3.0 mL) and THF (5.0 mL) was added a solution of KOH (184.22 mg, 3.283 mmol) in H 2 O (2.0 mL) dropwise at 0 °C. The resulting mixture was stirred for 2 h at room temperature. The mixture was then diluted with H 2 O (10 mL) and the aqueous layer was washed with MTBE (3 x 8 mL).
- Step 2 Synthesis of benzyl N-methyl-N-(3-oxopiperazine-1-carbonyl)-L-valinate
- piperazin-2-one 100.0 mg, 0.999 mmol
- Et 3 N 0.487 mL, 3.496 mmol
- DCM DCM
- benzyl N-(chlorocarbonyl)-N-methyl-L-valinate 311.75 mg, 1.099 mmol
- Step 3 Synthesis of benzyl N-methyl-N-(3-oxo-4-((R)-1-tritylaziridine-2-carbonyl)piperazine-1- carbonyl)-L-valinate
- Et 3 N 0.40 mL, 2.878 mmol
- isobutyl chlorocarbonate 255.53 mg, 1.871 mmol
- Step 4 Synthesis of N-methyl-N-(3-oxo-4-((R)-1-tritylaziridine-2-carbonyl)piperazine-1-carbonyl)- L-valine
- a suspension of benzyl N-methyl-N-(3-oxo-4-((R)-1-tritylaziridine-2-carbonyl)piperazine-1- carbonyl)-L-valinate (140.0 mg, 0.212 mmol) and Pd/C (50.0 mg) in THF (3 mL) was stirred for 2 h under a hydrogen atmosphere (1 atm). The mixture was then filtered and the filter cake was washed with MeOH (3 x 15 mL).
- Step 2 Synthesis of benzyl (S)-aziridine-2-carboxylate To a solution of benzyl (S)-1-tritylaziridine-2-carboxylate (300.0 mg, 0.715 mmol) in DCM (5.0 mL) at 0 °C was added TFA (326.2 mg, 2.860 mmol) and Et3SiH (332.6 mg, 2.860 mmol).
- Step 3 Synthesis of benzyl (S)-1-(2-((tert-butyldiphenylsilyl)oxy)ethyl)aziridine-2-carboxylate
- benzyl (S)-aziridine-2-carboxylate 400.0 mg, 2.257 mmol
- tert-butyl(2- iodoethoxy)diphenylsilane 1.85 g, 4.52 mmol
- K 2 CO 3 935.9 mg, 6.772 mmol
- Step 4 Synthesis of lithium (S)-1-(2-((tert-butyldiphenylsilyl)oxy)ethyl)aziridine-2-carboxylate
- benzyl (S)-1-(2-((tert-butyldiphenylsilyl)oxy)ethyl)aziridine-2-carboxylate 200.0 mg, 0.435 mmol
- MeOH 2.0 mL
- LiOH•H 2 O 36.5 mg, 0.870 mmol
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JP2022526198A JP2022553857A (ja) | 2019-11-04 | 2020-11-04 | Ras阻害剤 |
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CN202080091075.9A CN114901366A (zh) | 2019-11-04 | 2020-11-04 | Ras抑制剂 |
BR112022008534A BR112022008534A2 (pt) | 2019-11-04 | 2020-11-04 | Compostos, composição farmacêutica, conjugado e métodos para tratar câncer e para tratar um distúrbio relacionado à proteína ras |
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